Logfile of Trend Micro HijackThis v2.0.3 (BETA)
Scan saved at 17.45.29, on 13/06/2011
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\Programmi\Emsisoft Anti-Malware\a2service.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe
C:\Programmi\Maxtor\OneTouch Status\maxmenumgr.exe
C:\Programmi\Analog Devices\SoundMAX\SMax4PNP.exe
C:\Programmi\Labtec\Desktop\V5.1\kbdap32a.exe
C:\Programmi\ANI\ANIWZCS2 Service\WZCSLDR2.exe
C:\Programmi\D-Link\DWL-G122_DWA-110\AirGCFG.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\a-squared Free\a2service.exe
C:\WINDOWS\system32\ANIWConnService.exe
C:\Programmi\Java\jre6\bin\jqs.exe
C:\Programmi\File comuni\LogiShrd\LVMVFM\LVPrcSrv.exe
C:\Programmi\Maxtor\Sync\SyncServices.exe
C:\Programmi\Macrium\Reflect\ReflectService.exe
C:\Programmi\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\TomTom HOME 2\TomTomHOMEService.exe
C:\WINDOWS\System32\TUProgSt.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Chrome\Application\chrome.exe
C:\Programmi\TrendMicro\HiJackThis\HiJackThis.exe
C:\Programmi\Zamzom\Zamzom Wireless\Zamzom Wireless Network Tool Italiano.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: (no name) - {7b13ec3e-999a-4b70-b9cb-2617b8323822} - (no file)
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Programmi\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O4 - HKLM\..\Run: [avast5] C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe /nogui
O4 - HKLM\..\Run: [mxomssmenu] "C:\Programmi\Maxtor\OneTouch Status\maxmenumgr.exe"
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Programmi\Analog Devices\SoundMAX\SMax4PNP.exe
O4 - HKLM\..\Run: [OFFICEKB] C:\Programmi\Labtec\Desktop\V5.1\kbdap32a.exe
O4 - HKLM\..\Run: [ANIWZCS2Service] C:\Programmi\ANI\ANIWZCS2 Service\WZCSLDR2.exe
O4 - HKLM\..\Run: [D-Link D-Link Wireless G DWL-G122_DWA-110] C:\Programmi\D-Link\DWL-G122_DWA-110\AirGCFG.exe
O4 - HKLM\..\Run: [WZCSLDR2] C:\Programmi\D-Link\DWL-G122_DWA-110\WZCSLDR2.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Google Update] "C:\Documents and Settings\Davide\Impostazioni locali\Dati applicazioni\Google\Update\GoogleUpdate.exe" /c
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-19\..\RunOnce: [nltide_2] regsvr32 /s /n /i:U shell32 (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-20\..\RunOnce: [nltide_2] regsvr32 /s /n /i:U shell32 (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [nltide_2] regsvr32 /s /n /i:U shell32 (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [nltide_2] regsvr32 /s /n /i:U shell32 (User 'Default user')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {09E90109-A9AA-4980-BCEF-76F8D924E902} - (no file)
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra button: (no name) - {09E90109-A9AA-4980-BCEF-76F8D924E902} - (no file) (HKCU)
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} - http://download.bitdefender.com/resources/scanner/sources/en/scan8/oscan8.cab
O16 - DPF: {9191F686-7F0A-441D-8A98-2FE3AC1BD913} (ActiveScan 2.0 Installer Class) - http://acs.pandasoftware.com/activescan/cabs/as2stubie.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O22 - SharedTaskScheduler: Precaricatore Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Daemon di cache delle categorie di componenti - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Emsisoft Anti-Malware 5.0 - Service (a2AntiMalware) - Emsi Software GmbH - C:\Programmi\Emsisoft Anti-Malware\a2service.exe
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - C:\Programmi\a-squared Free\a2service.exe
O23 - Service: ANIWConn Service (ANIWConnService) - Unknown owner - C:\WINDOWS\system32\ANIWConnService.exe
O23 - Service: ANIWZCSd Service (ANIWZCSdService) - Wireless Service - C:\Programmi\ANI\ANIWZCS2 Service\ANIWZCSdS.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: Google Update Service (gupdate) (gupdate) - Google Inc. - C:\Programmi\Google\Update\GoogleUpdate.exe
O23 - Service: Servizio Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Programmi\Google\Update\GoogleUpdate.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\1150\Intel 32\IDriverT.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Programmi\Java\jre6\bin\jqs.exe
O23 - Service: Lavasoft Ad-Aware Service - Lavasoft Limited - C:\Programmi\Lavasoft\Ad-Aware\AAWService.exe
O23 - Service: Process Monitor (LVPrcSrv) - Logitech Inc. - C:\Programmi\File comuni\LogiShrd\LVMVFM\LVPrcSrv.exe
O23 - Service: Maxtor Service (Maxtor Sync Service) - Seagate Technology LLC - C:\Programmi\Maxtor\Sync\SyncServices.exe
O23 - Service: MSCSPTISRV - Sony Corporation - C:\Programmi\File comuni\Sony Shared\AVLib\MSCSPTISRV.exe
O23 - Service: PACSPTISVR - Unknown owner - C:\Programmi\File comuni\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: Macrium Reflect Image Mounting Service (ReflectService) - Unknown owner - C:\Programmi\Macrium\Reflect\ReflectService.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Programmi\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Programmi\File comuni\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: TomTomHOMEService - TomTom - C:\Programmi\TomTom HOME 2\TomTomHOMEService.exe
O23 - Service: TuneUp Drive Defrag Service (TuneUp.Defrag) - TuneUp Software - C:\WINDOWS\System32\TuneUpDefragService.exe
O23 - Service: TuneUp Program Statistics Service (TuneUp.ProgramStatisticsSvc) - TuneUp Software - C:\WINDOWS\System32\TUProgSt.exe

--
End of file - 9952 bytes

Dunque, prima cosa dovresti aggiornare Avast alla vs 6, poi HJT che ti avevo segnalato è la vs 2.0.4 e non
la Beta.
Poi rimuovi Emisoft Antimalware e poi ti dico cosa usare.
Elimina anche Lavasoft Ad-Aware. In sostituzione puoi usare SpyBot QUI, non installare il Tea Timer, leggi la scheda come fare.
Zamzom serve per controllare quanti pc usano la rete wireless, se usi solo il tuo pc questo programma non serve,
rimuovilo ed eventualmente lo installi quando ti serve un controllo, poi lo disinstalli.
Poi chiudi tutti i programmi e disconnesso fixa ed elimina queste voci:

R3 - URLSearchHook: (no name) - {7b13ec3e-999a-4b70-b9cb-2617b8323822} - (no file)
O9 - Extra button: (no name) - {09E90109-A9AA-4980-BCEF-76F8D924E902} - (no file)
O9 - Extra button: (no name) - {09E90109-A9AA-4980-BCEF-76F8D924E902} - (no file) (HKCU)

Poi installa QUESTO programma, lo aggiorni e poi fai una
scansione COMPLETA non veloce, elimina tutto quello che trova, posta il log.
Fai una pulizia con Ccleaner compreso il registro.
Vai in C:\windows, cerca la cartella Prefetch e la svuoti completamente.
Disattiva il Ripristino configurazione del sistema, riavvia il pc e poi riattivalo e crea un nuovo punto.
Rifai una scansione con HJT aggiornato, la vs 2.0.4 e posta il log.
Fai sapere come va il pc. Ciao

Il secondo log lo hai postato dopo.
Hai una versione di AVG vecchia, se vuoi mantenere questo antivirus aggiornalo,QUI, io lo cambierei perchè è un sw che non mi piace, poi elimina Emsisoft Anti-Malware, che dovrebbe essere una versione di prova.
Chiudi i programmi e disconnesso fixa e rimuovi queste voci:
I:\StartCodySafe.exe
I:\CodySafe\Launcher.exe
Poi installa QUESTO programma, lo aggiorni e poi fai una
scansione COMPLETA non veloce, elimina tutto quello che trova, posta il log.
Fai una pulizia con Ccleaner compreso il registro.
Fai sapere come va il pc.