My PC's buggered!

My PC is running slow, and my homepage keeps changing to res://ctywh.dll/index.html#96676. I have run every spyware remover/virus scanner under the sun and none have fixed the problem. Spysweeper 2.6.1 did however detect CWS_N53 Hijacker but when I remove this (whatever it is) it just comes straight back. This is very frustrating problem , could anyone please help...before I am forced to format my hard drive & give life to my pc/internet all over again.

here is the log from Hijackthis:

Logfile of HijackThis v1.97.7
Scan saved at 21:33:01, on 10/07/2004
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:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Common Files\Symantec Shared\ccProxy.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\sony\vaio media music server\SSSvr.exe
C:\Program Files\sony\photo server\appsrv\PhotoAppSrv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Common Files\sony shared\vaio media platform\SV_Httpd.exe
C:\Program Files\Common Files\Sony Shared\vaio media platform\sv_httpd.exe
C:\Program Files\Common Files\sony shared\vaio media platform\UPnPFramework.exe
C:\Program Files\Common Files\Sony Shared\vaio media platform\UPnPFramework.exe
C:\Program Files\Apoint\Apoint.exe
C:\Program Files\SigmaTel\C-Major Audio\stacmon.exe
C:\WINDOWS\System32\ezSP_Px.exe
C:\WINDOWS\System32\ICO.EXE
C:\Program Files\Sony\HotKey Utility\HKserv.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Sony\HotKey Utility\HKWnd.exe
C:\WINDOWS\System32\cbhzljpg.exe
C:\WINDOWS\system32\appdl32.exe
C:\Program Files\Apoint\Apntex.exe
C:\Program Files\Adobe\Acrobat 6.0\Distillr\acrotray.exe
C:\Program Files\powerpanel\Program\PcfMgr.exe
C:\WINDOWS\system32\mfcsr32.exe
C:\WINDOWS\System32\msiexec.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\Documents and Settings\Earim Chaudry\My Documents\My Received Files\HijackThis.exe
C:\WINDOWS\notepad.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system32\ctywh.dll/sp.html#96676
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.bbc.co.uk
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.bbc.co.uk
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system32\ctywh.dll/sp.html#96676
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = res://ctywh.dll/index.html#96676
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = res://C:\WINDOWS\system32\ctywh.dll/sp.html#96676
O2 - BHO: (no name) - {DB34B7F0-D490-5205-7CAE-49DCC4F42315} - C:\WINDOWS\ntgk32.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint\Apoint.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [SigmaTel StacMon] C:\Program Files\SigmaTel\C-Major Audio\stacmon.exe
O4 - HKLM\..\Run: [ezShieldProtector for Px] C:\WINDOWS\System32\ezSP_Px.exe
O4 - HKLM\..\Run: [Mouse Suite 98 Daemon] ICO.EXE
O4 - HKLM\..\Run: [HKSERV.EXE] C:\Program Files\Sony\HotKey Utility\HKserv.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [URLLSTCK.exe] C:\Program Files\Norton Internet Security\UrlLstCk.exe
O4 - HKLM\..\Run: [ISP] C:\Program Files\sony\ISPselector\ISPselector.exe /SCHEDULER
O4 - HKLM\..\Run: [REGSHAVE] C:\Program Files\REGSHAVE\REGSHAVE.EXE /AUTORUN
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [hkntfsc] C:\WINDOWS\System32\hkntfsc.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [iestvgoqcjyt] C:\WINDOWS\System32\cbhzljpg.exe
O4 - HKLM\..\Run: [crqf32.exe] C:\WINDOWS\system32\crqf32.exe
O4 - HKLM\..\Run: [apixk32.exe] C:\WINDOWS\system32\apixk32.exe
O4 - HKLM\..\Run: [ieek32.exe] C:\WINDOWS\system32\ieek32.exe
O4 - HKLM\..\Run: [crgf.exe] C:\WINDOWS\system32\crgf.exe
O4 - HKLM\..\Run: [ntbs32.exe] C:\WINDOWS\system32\ntbs32.exe
O4 - HKLM\..\Run: [sdkjs32.exe] C:\WINDOWS\system32\sdkjs32.exe
O4 - HKLM\..\Run: [crry32.exe] C:\WINDOWS\system32\crry32.exe
O4 - HKLM\..\Run: [appdl32.exe] C:\WINDOWS\system32\appdl32.exe
O4 - HKLM\..\RunOnce: [mfcsr32.exe] C:\WINDOWS\system32\mfcsr32.exe
O4 - HKLM\..\RunOnce: [mfclf32.exe] C:\WINDOWS\mfclf32.exe
O4 - Global Startup: Acrobat Assistant.lnk = C:\Program Files\Adobe\Acrobat 6.0\Distillr\acrotray.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: PowerPanel.lnk = ?
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office10\EXCEL.EXE/3000
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Messenger (HKLM)
O14 - IERESET.INF: START_PAGE_URL=http://www.club-vaio.sony-europe.com/
O15 - Trusted Zone: *.sony-europe.com
O15 - Trusted Zone: *.sonystyle-europe.com
O15 - Trusted Zone: *.vaio-link.com
O16 - DPF: {4C39376E-FA9D-4349-BACC-D305C1750EF3} (EPUImageControl Class) - http://tools.ebayimg.com/eps/wl/activex/EPUWALControl_v1-0-3-9.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab