Please review and advise on any possible reason why my computer has become extremely slow. Thanks Micron.

Logfile of HijackThis v1.99.1
Scan saved at 7:47:38 PM, on 7/11/2007
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\Program Files\Common Files\iS3\Anti-Spyware\SZServer.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Common Files\Ulead Systems\DVD\USISrv.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\DAP\DAP.EXE
C:\Program Files\SlySoft\CloneCD\CloneCDTray.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\PROGRA~1\HEWLET~1\HPSHAR~1\hpgs2wnf.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Hewlett-Packard\AiO\hp officejet 7100 series\Bin\hpogrp07.exe
C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\PROGRA~1\HEWLET~1\AiO\Shared\Bin\hpoevm07.exe
C:\WINDOWS\system32\ZoneLabs\avsys\ScanningProcess.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\system32\ZoneLabs\avsys\ScanningProcess.exe
C:\PROGRA~1\ZONELA~1\ZONEAL~1\MAILFR~1\mantispm.exe
C:\Program Files\STOPzilla!\STOPzilla.exe
C:\Program Files\STOPzilla!\SZOptions.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\STOPzilla!\SZScanner.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Hijackthis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com
R3 - Default URLSearchHook is missing
O2 - BHO: DAPBHO Class - {0096CC0A-623C-4829-AD9C-19AF0DC9D8FE} - C:\Program Files\DAP\DAPIEBar.dll
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_19_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: SITEguard BHO - {1827766B-9F49-4854-8034-F6EE26FCB1EC} - C:\Program Files\STOPzilla!\SZSG.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar5.dll
O2 - BHO: STOPzilla Browser Helper Object - {E3215F20-3212-11D6-9F8B-00D0B743919D} - C:\Program Files\STOPzilla!\SZIEBHO.dll
O3 - Toolbar: (no name) - {ACB1E670-3217-45C4-A021-6B829A8A27CB} - (no file)
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_19_0.dll
O3 - Toolbar: FlashGet Bar - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\fgiebar.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar5.dll
O3 - Toolbar: STOPzilla - {98828DED-A591-462F-83BA-D2F62A68B8B8} - C:\Program Files\STOPzilla!\SZSG.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [USIUDF_Eject_Monitor] C:\Program Files\Common Files\Ulead Systems\DVD\USISrv.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Common Files\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [DownloadAccelerator] "C:\Program Files\DAP\DAP.EXE" /STARTUP
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [AnyDVD] C:\Program Files\SlySoft\AnyDVD\AnyDVD.exe
O4 - HKLM\..\Run: [SpeedOptimizer] C:\PROGRA~1\SPEEDO~1\SPO.EXE -s
O4 - HKLM\..\Run: [CloneCDTray] "C:\Program Files\SlySoft\CloneCD\CloneCDTray.exe" /s
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE"
O4 - HKCU\..\Run: [Free Download Manager] C:\Program Files\Free Download Manager\fdm.exe -autorun
O4 - Global Startup: HPAiODevice(hp officejet 7100 series) - 1.lnk = C:\Program Files\Hewlett-Packard\AiO\hp officejet 7100 series\Bin\hpogrp07.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O8 - Extra context menu item: &Clean Traces - C:\Program Files\DAP\Privacy Package\dapcleanerie.htm
O8 - Extra context menu item: &Download with &DAP - C:\Program Files\DAP\dapextie.htm
O8 - Extra context menu item: Download &all with DAP - C:\Program Files\DAP\dapextie2.htm
O8 - Extra context menu item: Download All by FlashGet - C:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: Download using FlashGet - C:\Program Files\FlashGet\jc_link.htm
O8 - Extra context menu item: Download with GetRight - C:\Program Files\GetRight\GRdownload.htm
O8 - Extra context menu item: Open with GetRight Browser - C:\Program Files\GetRight\GRbrowse.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra 'Tools' menuitem: Create Mobile Favorite… - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: AbsolutePoker.net - {5E72AD5A-20DF-4ca4-9B7B-D9717FFDE0C5} - C:\Documents and Settings\All Users\Start Menu\Programs\AbsolutePoker NET\AbsolutePoker NET.lnk
O9 - Extra 'Tools' menuitem: AbsolutePoker.net - {5E72AD5A-20DF-4ca4-9B7B-D9717FFDE0C5} - C:\Documents and Settings\All Users\Start Menu\Programs\AbsolutePoker NET\AbsolutePoker NET.lnk
O9 - Extra button: EmpirePoker - {77E68763-4284-41d6-B7E7-B6E1F053A9E7} - C:\Program Files\EmpirePoker\EmpirePoker.exe (file missing)
O9 - Extra 'Tools' menuitem: EmpirePoker - {77E68763-4284-41d6-B7E7-B6E1F053A9E7} - C:\Program Files\EmpirePoker\EmpirePoker.exe (file missing)
O9 - Extra button: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyPoker\PartyPoker.exe (file missing)
O9 - Extra 'Tools' menuitem: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyPoker\PartyPoker.exe (file missing)
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\flashget.exe
O15 - Trusted Zone: *.streamload.com
O16 - DPF: {2B323CD9-50E3-11D3-9466-00A0C9700498} - http://us.chat1.yimg.com/us.yimg.com/i/cha…v45/yacscom.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/…nst20040510.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://software-dl.real.com/30426f58b7b106…ip/RdxIE601.cab
O16 - DPF: {7D1E9C49-BD6A-11D3-87A8-009027A35D73} (Yahoo! Audio UI1) - http://chat.yahoo.com/cab/yacsui.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMesse…pDownloader.cab
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: STOPzilla Service (szserver) - iS3, Inc. - C:\Program Files\Common Files\iS3\Anti-Spyware\SZServer.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe