Ok.
My updated panda found: W32/SDBOT.FTP virus in Windows\System32\y and disinfected it.
I followed all the instructions.
Deleted all the bad entries you said.
I tried to find the files Sdin.exe and the other, but they do not exist anymore (at least I hope)
Rebooted, and here's the Analyser log:
Note: The pc now seem to work perfectly!!!! 
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Log was analyzed using KRC HijackThis Analyzer - Updated on 2/10/05
Get updates at
http://www.greyknight17.com/download.htm#programs
***Security Programs Detected***
O2 - BHO: PCTools Site Guard - {5C8B2A36-3DB1-42A4-A3CB-D426709BBFEB} - C:\PROGRA~1\SPYWAR~1\tools\iesdsg.dll
O2 - BHO: PCTools Browser Monitor - {B56A7D7D-6927-48C8-A975-17DF180C71AC} - C:\PROGRA~1\SPYWAR~1\tools\iesdpb.dll
O4 - HKLM\..\Run: [SmcService] C:\PROGRA~1\Sygate\SPF\smc.exe -startgui
O9 - Extra button: Spyware Doctor - {2D663D1A-8670-49D9-A1A5-4C56B4E14E84} - C:\PROGRA~1\SPYWAR~1\tools\iesdpb.dll
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Logfile of HijackThis v1.99.1
Scan saved at 16.17.41, on 26/02/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Running processes:
C:\Programmi\Sygate\SPF\smc.exe
C:\Programmi\File comuni\EPSON\EBAPI\SAgent2.exe
C:\Programmi\File comuni\Microsoft Shared\VS7Debug\mdm.exe
C:\Programmi\Panda Software\Panda Antivirus Platinum\pavsrv51.exe
C:\Programmi\Panda Software\Panda Antivirus Platinum\AVENGINE.EXE
C:\Programmi\IPM\Adsl\DataWay\dslstat.exe
C:\Programmi\Panda Software\Panda Antivirus Platinum\APVXDWIN.EXE
C:\Programmi\File comuni\Real\Update_OB\realsched.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE
C:\Programmi\QuickTime\qttask.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\Panda Software\Panda Antivirus Platinum\pavProxy.exe
C:\Hijack this\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar1.dll
O2 - BHO: IEPlugin Class - {CF7C3CF0-4B15-11D1-ABED-709549C10000} - C:\Programmi\System Optimizer\IEHelper.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar1.dll
O4 - HKLM\..\Run: [Jet Detection] C:\Programmi\Creative\SBLive\PROGRAM\ADGJDet.exe
O4 - HKLM\..\Run: [CTStartup] C:\Programmi\Creative\Splash Screen\CTEaxSpl.EXE /run
O4 - HKLM\..\Run: [DSLSTATEXE] C:\Programmi\IPM\Adsl\DataWay\dslstat.exe icon
O4 - HKLM\..\Run: [SCANINICIO] "C:\Programmi\Panda Software\Panda Antivirus Platinum\Inicio.exe"
O4 - HKLM\..\Run: [APVXDWIN] "C:\Programmi\Panda Software\Panda Antivirus Platinum\APVXDWIN.EXE" /s
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [EPSON Stylus C62 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE /P23 "EPSON Stylus C62 Series" /O5 "LPT1:" /M "Stylus C62"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Google Search - res://c:\programmi\google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Collegamenti a ritroso - res://c:\programmi\google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Pagine simili - res://c:\programmi\google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Versione cache della pagina - res://c:\programmi\google\GoogleToolbar1.dll/cmcache.html
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
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) -
http://www.pandasoftware.com/activescan/as5/asinst.cab
O23 - Service: EPSON Printer Status Agent2 (EPSONStatusAgent2) - SEIKO EPSON CORPORATION - C:\Programmi\File comuni\EPSON\EBAPI\SAgent2.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Panda Software - C:\Programmi\Panda Software\Panda Antivirus Platinum\pavsrv51.exe
O23 - Service: Sygate Personal Firewall Pro (SmcService) - Sygate Technologies, Inc. - C:\Programmi\Sygate\SPF\smc.exe
End of KRC HijackThis Analyzer Log.
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