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Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 7.51.34, on 29/07/2009
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16850)
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:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
C:\Programmi\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\ehome\ehtray.exe
C:\Programmi\Java\jre6\bin\jusched.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\sm56hlpr.exe
C:\progra~1\scansoft\paperp~1\pptd40nt.exe
D:\Documenti D\Deframmenta\Smart\IObit SmartDefrag\IObit SmartDefrag.exe
C:\WINDOWS\RTHDCPL.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Free Download Manager\fdm.exe
C:\Programmi\ScanSoft\PaperPort\Config\Ereg\REMIND32.EXE
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Programmi\Java\jre6\bin\jqs.exe
C:\WINDOWS\Microsoft.NET\Framework\v1.0.3705\NetfxUpdate.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\eHome\ehmsas.exe
C:\Programmi\Mozilla Firefox\firefox.exe
D:\Documenti D\Utility\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://search.conduit.com?SearchSource=10&ctid=CT2102507
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\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: PHPNukeIT Toolbar - {2c965f3f-8efd-4bfc-a2c5-1672845fdbbf} - C:\Programmi\PHPNukeIT\tbPHPN.dll
O2 - BHO: PHPNukeIT Toolbar - {2c965f3f-8efd-4bfc-a2c5-1672845fdbbf} - C:\Programmi\PHPNukeIT\tbPHPN.dll
O2 - BHO: FDMIECookiesBHO Class - {CC59E0F9-7E43-44FA-9FAA-8377850BF205} - C:\Programmi\Free Download Manager\iefdm2.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
O3 - Toolbar: PHPNukeIT Toolbar - {2c965f3f-8efd-4bfc-a2c5-1672845fdbbf} - C:\Programmi\PHPNukeIT\tbPHPN.dll
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [SkyTel] SkyTel.EXE
O4 - HKLM\..\Run: [SMSERIAL] sm56hlpr.exe
O4 - HKLM\..\Run: [PaperPort PTD] c:\progra~1\scansoft\paperp~1\pptd40nt.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [SmartDefrag] "D:\Documenti D\Deframmenta\Smart\IObit SmartDefrag\IObit SmartDefrag.exe" /StartUp
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Free Download Manager] "C:\Programmi\Free Download Manager\fdm.exe" -autorun
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: reminder-Registrazione del prodotto Scansoft.lnk = C:\Programmi\ScanSoft\PaperPort\Config\Ereg\REMIND32.EXE
O4 - Global Startup: Brother SmartUI PopUp.lnk = C:\Programmi\ScanSoft\PaperPort\PopUp\SmartUI.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office\OSA9.EXE
O8 - Extra context menu item: Scarica con Free Download Manager - file://C:\Programmi\Free Download Manager\dllink.htm
O8 - Extra context menu item: Scarica i video con Free Download Manager - file://C:\Programmi\Free Download Manager\dlfvideo.htm
O8 - Extra context menu item: Scarica selezionati con Free Download Manager - file://C:\Programmi\Free Download Manager\dlselected.htm
O8 - Extra context menu item: Scarica tutto con Free Download Manager - file://C:\Programmi\Free Download Manager\dlall.htm
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:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Programmi\Java\jre6\bin\jqs.exe

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End of file - 5917 bytes

se lo sposti in sicurezza hai maggiori possibilita' che qualche esperto lo veda e ti risponda,magari se riscontri problemi dai anche una descrizione.