Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 1.45.09, on 10/11/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16735)
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:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\a-squared Free\a2service.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\WINDOWS\system32\CTsvcCDA.exe
C:\Programmi\Creative\Shared Files\CTDevSrv.exe
C:\Programmi\CDBurnerXP\NMSAccessU.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\PGPsdkServ.exe
C:\Programmi\Sunbelt Software\Personal Firewall\kpf4ss.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\PROGRA~1\AVG\AVG8\avgemc.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Programmi\Synaptics\SynTP\SynTPLpr.exe
C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Programmi\BillP Studios\WinPatrol\winpatrol.exe
C:\Programmi\ClamWin\bin\ClamTray.exe
C:\Programmi\HP\ToolBoxFX\bin\HPTLBXFX.exe
C:\Programmi\Java\jre1.6.0_07\bin\jusched.exe
C:\PROGRA~1\AVG\AVG8\avgtray.exe
C:\Programmi\HP\HP Software Update\HPWuSchd2.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Creative\Creative Media Lite\CTZDetec.exe
C:\Programmi\PGP Corporation\PGP for Windows XP\PGPtray.exe
C:\WINDOWS\twain_32\A4CIS\WATCH.exe
C:\Programmi\IBM\Lotus\Symphony\framework\shared\eclipse\plugins\com.ibm.productivity.tools.base.

app.win32_3.0.1.20080529-0018\soffice.exe
C:\Programmi\Sunbelt Software\Personal Firewall\kpf4gui.exe
C:\Programmi\Sunbelt Software\Personal Firewall\kpf4gui.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programmi\FreePOPs\freepopsd.exe
C:\Programmi\HP\Digital Imaging\Smart Web Printing\hpswp_clipbook.exe
C:\Programmi\HiJackThis\HijackThis.exe

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 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: btorbit.com - {000123B4-9B42-4900-B3F7-F4B073EFC214} -

C:\Programmi\Orbitdownloader\orbitcth.dll
O2 - BHO: HP Print Enhancer - {0347C33E-8762-4905-BF09-768834316C61} - C:\Programmi\HP\Digital

Imaging\Smart Web Printing\hpswp_printenhancer.dll
O2 - BHO: AVG Safe Search - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} -

C:\Programmi\AVG\AVG8\avgssie.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} -

C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} -

C:\Programmi\Java\jre1.6.0_07\bin\ssv.dll
O2 - BHO: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} -

C:\Programmi\AVG\AVG8\avgtoolbar.dll
O2 - BHO: (no name) - {FFFFFEF0-5B30-21D4-945D-000000000000} - C:\PROGRA~1\STARDO~1\SDIEInt.dll
O2 - BHO: HP Smart BHO Class - {FFFFFFFF-CF4E-4F2B-BDC2-0E72E116A856} - C:\Programmi\HP\Digital

Imaging\Smart Web Printing\hpswp_BHO.dll
O3 - Toolbar: Veoh Browser Plug-in - {D0943516-5076-4020-A3B5-AEFAF26AB263} - C:\Programmi\Veoh

Networks\Veoh\Plugins\reg\VeohToolbar.dll
O3 - Toolbar: Grab Pro - {C55BBCD6-41AD-48AD-9953-3609C48EACC7} -

C:\Programmi\Orbitdownloader\GrabPro.dll
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} -

C:\Programmi\AVG\AVG8\avgtoolbar.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [SynTPLpr] C:\Programmi\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [WinPatrol] C:\Programmi\BillP Studios\WinPatrol\winpatrol.exe
O4 - HKLM\..\Run: [ClamWin] "C:\Programmi\ClamWin\bin\ClamTray.exe" --logon
O4 - HKLM\..\Run: [ToolBoxFX] "C:\Programmi\HP\ToolBoxFX\bin\HPTLBXFX.exe" /enum:on /alerts:on

/notifications:on /systrayIcon:on /fl:on /fr:on /appData:on
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.6.0_07\bin\jusched.exe"
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKLM\..\Run: [SODCPreLoad]

C:\Programmi\IBM\Lotus\Symphony\framework\shared\eclipse\plugins\com.ibm.productivity.tools.base.

app.win32_3.0.1.20080529-0018\preload.exe C:\Programmi\IBM\Lotus\Symphony\data\.sodc\
O4 - HKLM\..\Run: [HP Software Update] C:\Programmi\HP\HP Software Update\HPWuSchd2.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [ccleaner] "C:\Programmi\CCleaner\CCleaner.exe" /AUTO
O4 - HKCU\..\Run: [CTZDetec.exe] C:\Programmi\Creative\Creative Media Lite\CTZDetec.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: Watch.lnk = C:\WINDOWS\twain_32\A4CIS\WATCH.exe
O4 - Global Startup: PGPtray.lnk = ?
O8 - Extra context menu item: &Download by Orbit -

res://C:\Programmi\Orbitdownloader\orbitmxt.dll/201
O8 - Extra context menu item: &Grab video by Orbit -

res://C:\Programmi\Orbitdownloader\orbitmxt.dll/204
O8 - Extra context menu item: Do&wnload selected by Orbit -

res://C:\Programmi\Orbitdownloader\orbitmxt.dll/203
O8 - Extra context menu item: Down&load all by Orbit -

res://C:\Programmi\Orbitdownloader\orbitmxt.dll/202
O8 - Extra context menu item: Salva oggetto con Star Downloader - C:\Programmi\Star

Downloader\sdie.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} -

C:\Programmi\Java\jre1.6.0_07\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} -

C:\Programmi\Java\jre1.6.0_07\bin\ssv.dll
O9 - Extra button: Selezione intelligente HP - {DDE87865-83C5-48c4-8357-2F5B1AA84522} -

C:\Programmi\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} -

C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration -

{DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: @C:\Programmi\Messenger\Msgslang.dll,-61144 -

{FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: @C:\Programmi\Messenger\Msgslang.dll,-61144 -

{FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O16 - DPF: {0A5FD7C5-A45C-49FC-ADB5-9952547D5715} (Creative Software AutoUpdate) -

http://www.creative.com/softwareupdate/su/ocx/15031/CTSUEng.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) -

http://www.update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?12039581

65549
O16 - DPF: {6C269571-C6D7-4818-BCA4-32A035E8C884} (Creative Software AutoUpdate) -

http://www.creative.com/softwareupdate/su/ocx/15101/CTSUEng.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) -

http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {F6ACF75C-C32C-447B-9BEF-46B766368D29} (Creative Software AutoUpdate Support Package)

- http://www.creative.com/softwareupdate/su/ocx/15106/CTPID.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{CFC94E8A-47CB-4320-B862-69FAEDF66A6A}: NameServer =

85.37.17.48 85.38.28.88
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} -

C:\Programmi\AVG\AVG8\avgpp.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} -

C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: avgrsstx.dll
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - C:\Programmi\a-squared

Free\a2service.exe
O23 - Service: AVG Free8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. -

C:\PROGRA~1\AVG\AVG8\avgemc.exe
O23 - Service: AVG Free8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. -

C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd -

C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: CT Device Query service (CTDevice_Srv) - Creative Technology Ltd -

C:\Programmi\Creative\Shared Files\CTDevSrv.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation -

C:\Programmi\File comuni\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: NMSAccessU - Unknown owner - C:\Programmi\CDBurnerXP\NMSAccessU.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation -

C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PGPsdkService (PGPsdkServ) - PGP Corporation - C:\WINDOWS\system32\PGPsdkServ.exe
O23 - Service: ServiceLayer - Nokia. - C:\Programmi\File comuni\PCSuite\Services\ServiceLayer.exe
O23 - Service: Sunbelt Personal Firewall 4 (SPF4) - Sunbelt Software - C:\Programmi\Sunbelt

Software\Personal Firewall\kpf4ss.exe

--
End of file - 9578 bytes

Un'altra cosa: hai inviato la DLL in oggetto (quella che AVG ti segnala come "infetta") a VirusTotal?
Se sì, che ne è venuto fuori?
Se invece no, potresti provare, per favore, ad inviarla e farla scansionare?
http://www.virustotal.com/it/