System very slow after removing virus/trojan

having recently run Kaspersky antivirus and removed a number of viruses/trojans, the system now runs very slowly. I am desperate to get this fixed can someone please help. the viruses removed were:
windows\system32\gin.dll
program files\common files\updmgr.exe
windows\system32\2_0_1 browserhelper2.dll
windows\system32\a.exe

The Hijack trace is as follows:

Logfile of HijackThis v1.97.7
Scan saved at 00:54:01, on 16/05/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\Program Files\Common Files\EPSON\EBAPI\SAgent2.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\avpm.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\Program Files\Norton SystemWorks\Norton AntiVirus\navapsvc.exe
C:\Program Files\Norton SystemWorks\Norton Utilities\NPROTECT.EXE
C:\WINDOWS\system32\slserv.exe
C:\PROGRA~1\NORTON~1\SPEEDD~1\nopdb.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\WINDOWS\System32\gsicon.exe
C:\WINDOWS\System32\dslagent.exe
C:\WINDOWS\System32\dslagent.exe
C:\WINDOWS\System32\STDSB.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\PROGRA~1\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Adobe\Acrobat 6.0 CE\Distillr\acrotray.exe
C:\Program Files\Messenger\msmsgs.exe
c:\hijackthis\hijackthis.exe
E:\Software\HijackThis.exe

O2 - BHO: (no name) - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 6.0 CE\Acrobat\AcroIEFavClient.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton SystemWorks\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 6.0 CE\Acrobat\AcroIEFavClient.dll
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Program Files\Common Files\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [GSICONEXE] gsicon.exe
O4 - HKLM\..\Run: [DSLAGENTEXE] dslagent.exe USB
O4 - HKLM\..\Run: [STDSB] C:\WINDOWS\System32\STDSB.exe
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Zone Labs Client] C:\PROGRA~1\Zone Labs\ZoneAlarm\zlclient.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [System Mechanic Popup Stopper] "C:\Program Files\iolo\System Mechanic 4\PopupStopper.exe"
O4 - Global Startup: Acrobat Assistant.lnk = C:\Program Files\Adobe\Acrobat 6.0 CE\Distillr\acrotray.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\Microsoft Office\Office10\EXCEL.EXE/3000
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Windows Messenger (HKLM)
O12 - Plugin for .mid: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin2.dll
O15 - Trusted Zone: URL
O16 - DPF: {1D6711C8-7154-40BB-8380-3DEA45B69CBF} (Web P2P Installer) -
O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - URL
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - URL
O17 - HKLM\System\CCS\Services\Tcpip\..\{4630B7D5-B422-458B-8118-8546E2630D44}: NameServer = 217.35.209.180 194.72.9.38
O17 - HKLM\System\CS1\Services\Tcpip\..\{4630B7D5-B422-458B-8118-8546E2630D44}: NameServer = 217.35.209.180 194.72.9.38

Hi elinachris,

You seem to have two antivirus programs running. It's concidered best practice to remove the last one you installed to avoid conflict.

There is really no malware running on your computer, except maybe the file in question (below).

Run HijackThis, place a checkmark next to the following items. Close ALL other windows and browsers except HijackThis. Click "fix checked".

O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE

Reboot to complete the removal processes.

Could you check the properties of this file, hopefully to track down a company name.
O4 - HKLM\..\Run: [STDSB] C:\WINDOWS\System32\STDSB.exe

Tom