Help me removie ISearch. I don't know how to remove it. Here is HijackThis log of my computer:

Logfile of HijackThis v1.99.1
Scan saved at 5:50:57 PM, on 5/30/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16441)
Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\LEXBCES.EXE
C:\WINNT\system32\spoolsv.exe
C:\WINNT\system32\LEXPPS.EXE
c:\program files\mcafee.com\agent\mcdetect.exe
c:\PROGRA~1\mcafee.com\agent\mctskshd.exe
c:\PROGRA~1\mcafee.com\vso\mcvsrte.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MPFSERVICE.exe
C:\WINNT\system32\HPZipm12.exe
c:\PROGRA~1\mcafee.com\vso\mcshield.exe
C:\WINNT\Explorer.EXE
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\Napster\napster.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
C:\PROGRA~1\mcafee.com\agent\mcagent.exe
C:\PROGRA~1\mcafee.com\vso\mcvsshld.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\QuickTime\qttask.exe
c:\progra~1\mcafee.com\vso\mcvsescn.exe
C:\WINNT\system32\ctfmon.exe
C:\Program Files\AIM\aim.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfAgent.exe
c:\progra~1\mcafee.com\vso\mcvsftsn.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Yahoo!\YPSR\ypsr.exe
C:\Program Files\Hijackthis\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cust...search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.yahoo.com
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://www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://g.msn.com/0SEENUS/SAOS01?FORM=TOOLBR
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Windows Internet Explorer provided by Yahoo!
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: (no name) - ?þ - (no file)
O3 - Toolbar: McAfee VirusScan - {BA52B914-B692-46c4-B683-905236F6F655} - c:\progra~1\mcafee.com\vso\mcvsshl.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
O4 - HKLM\..\Run: [Synchronization Manager] "mobsync.exe" /logon
O4 - HKLM\..\Run: [PrinTray] C:\WINNT\system32\spool\DRIVERS\W32X86\2\printray.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\HP\HP Software Update\HPWuSchd2.exe"
O4 - HKLM\..\Run: [NapsterShell] "C:\Program Files\Napster\napster.exe" /systray
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [MPFExe] C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
O4 - HKLM\..\Run: [MCAgentExe] c:\PROGRA~1\mcafee.com\agent\mcagent.exe
O4 - HKLM\..\Run: [MCUpdateExe] c:\PROGRA~1\mcafee.com\agent\mcupdate.exe
O4 - HKLM\..\Run: [VSOCheckTask] "c:\PROGRA~1\mcafee.com\vso\mcmnhdlr.exe" /checktask
O4 - HKLM\..\Run: [VirusScan Online] "c:\PROGRA~1\mcafee.com\vso\mcvsshld.exe"
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINNT\system32\ctfmon.exe
O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM\aim.exe -cnetwait.odl
O8 - Extra context menu item: &AIM Search - res://C:\Program Files\AIM Toolbar\AIMBar.dll/aimsearch.htm
O8 - Extra context menu item: &MSN Search - res://C:\Program Files\MSN Toolbar Suite\TB\02.00.0001.1203\en-us\msntb.dll/search.htm
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra button: WeatherBug - {AF6CABAB-61F9-4f12-A198-B7D41EF1CB52} - C:\WINNT\system32\shdocvw.dll (HKCU)
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {11260943-421B-11D0-8EAC-0000C07D88CF} (iPIX ActiveX Control) - http://www.ipix.com/download/ipixx.cab
O16 - DPF: {1239CC52-59EF-4DFA-8C61-90FFA846DF7E} - http://www.musicnotes.com/download/mnviewer.cab
O16 - DPF: {13EC55CF-D993-475B-9ACA-F4A384957956} (Controller Class) - https://www.windowsonecare.com/insta...SSWebAgent.CAB
O16 - DPF: {1842B0EE-B597-11D4-8997-00104BD12D94} (iCC Class) - http://www.pcpitstop.com/internet/pcpConnCheck.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {4ED9DDF0-7479-4BBE-9335-5A1EDB1D8A21} (McAfee.com Operating System Class) - http://download.mcafee.com/molbin/sh...0/mcinsctl.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by114fd.bay114.hotmail.msn.co...s/MsnPUpld.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsof...?1156383363982
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsof...?1121113272775
O16 - DPF: {745395C8-D0E1-4227-8586-624CA9A10A8D} - http://testcam.compunet1.com/activex/AMC.cab
O16 - DPF: {8A0DCBDB-6E20-489C-9041-C1E8A0352E75} - http://awbeta.net-nucleus.com/FIX/WinATS.cab
O16 - DPF: {94B82441-A413-4E43-8422-D49930E69764} - https://echat.us.dell.com/Media/Visi.../TLIEFlash.CAB
O16 - DPF: {B64F4A7C-97C9-11DA-8BDE-F66BAD1E3F3A} - http://download.cdn.winsoftware.com/...reeInstall.cab
O16 - DPF: {BCC0FF27-31D9-4614-A68E-C18E1ADA4389} (DwnldGroupMgr Class) - http://download.mcafee.com/molbin/sh...23/mcgdmgr.cab
O16 - DPF: {E7D2588A-7FB5-47DC-8830-832605661009} (Live Collaboration) - https://livewc01.custhelp.com/7530-b.../java/RntX.cab
O16 - DPF: {EE8B6D5F-FEF2-11D0-B13F-00A024798EF3} (Microsoft Search Settings Control) - http://lg.home.microsoft.com/search/...chsettings.cab
O16 - DPF: {F5C90925-ABBF-4475-88F5-8622B452BA9E} (Compaq System Data Class) - http://wwemail.support.hp.com/fd2/objects/SysQuery.cab
O20 - Winlogon Notify: WgaLogon - C:\WINNT\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINNT\system32\WPDShServiceObj.dll
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINNT\system32\LEXBCES.EXE
O23 - Service: McAfee WSC Integration (McDetect.exe) - McAfee, Inc - c:\program files\mcafee.com\agent\mcdetect.exe
O23 - Service: McAfee.com McShield (McShield) - Unknown owner - c:\PROGRA~1\mcafee.com\vso\mcshield.exe
O23 - Service: McAfee Task Scheduler (McTskshd.exe) - McAfee, Inc - c:\PROGRA~1\mcafee.com\agent\mctskshd.exe
O23 - Service: McAfee SecurityCenter Update Manager (mcupdmgr.exe) - McAfee, Inc - C:\PROGRA~1\McAfee.com\Agent\mcupdmgr.exe
O23 - Service: McAfee.com VirusScan Online Realtime Engine (MCVSRte) - McAfee, Inc - c:\PROGRA~1\mcafee.com\vso\mcvsrte.exe
O23 - Service: Microsoft NetWork FireWall Services - Unknown owner - NetServices.exe (file missing)
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee Corporation - C:\PROGRA~1\McAfee.com\PERSON~1\MPFSERVICE.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINNT\system32\HPZipm12.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Print Spooler Service (SpoolSvc212) - Unknown owner - C:\WINNT\system32\sklrr7yuohbuojdyt.exe (file missing)
O23 - Service: Service Logon Protocol (SVSLOG) - Unknown owner - C:\WINNT\svslogon.exe (file missing)