homepage and screen backround hijacked

Backround hijacked!!!
About blank is my homepage
Please help prompto!!

log as follows

Logfile of HijackThis v1.99.1
Scan saved at 10:08:09, on 22/08/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\SYSTEM\ZONELABS\VSMON.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\SYSTEM\LTMSG.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\PROGRAM FILES\MICROSOFT HARDWARE\MOUSE\POINT32.EXE
C:\PROGRAM FILES\NORTON ANTIVIRUS\POPROXY.EXE
C:\PROGRAM FILES\COMMON FILES\REAL\UPDATE_OB\REALSCHED.EXE
C:\PROGRAM FILES\NORTON ANTIVIRUS\NAVAPW32.EXE
C:\PROGRAM FILES\ZONE LABS\ZONEALARM\ZLCLIENT.EXE
C:\PROGRAM FILES\MSN MESSENGER\MSNMSGR.EXE
C:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\WORKS SHARED\WKCALREM.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\WINDOWS\SYSTEM\SYSMV.EXE
C:\WINDOWS\TEMP\C390.TMP
C:\WINDOWS\SYSTEM\INTELL32.EXE
C:\WINDOWS\SYSTEM\SYSKM.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SYSTEM\STIMON.EXE
C:\WINDOWS\DESKTOP\HJT\HIJACKTHIS.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\system\txzpa.dll/sp.html#62608
R3 - Default URLSearchHook is missing
O2 - BHO: Class - {B9E4D006-7A30-6772-18E7-A2C7B4E14473} - C:\WINDOWS\JAVAGK.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [EnsoniqMixer] starter.exe
O4 - HKLM\..\Run: [LTWinModem1] ltmsg.exe 9
O4 - HKLM\..\Run: [WorksFUD] C:\Program Files\Microsoft Works\wkfud.exe
O4 - HKLM\..\Run: [Microsoft Works Portfolio] C:\Program Files\Microsoft Works\WksSb.exe /AllUsers
O4 - HKLM\..\Run: [POINTER] point32.exe
O4 - HKLM\..\Run: [Norton eMail Protect] C:\PROGRAM FILES\NORTON ANTIVIRUS\POProxy.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Norton Auto-Protect] C:\PROGRA~1\NORTON~1\NAVAPW32.EXE /LOADQUIET
O4 - HKLM\..\Run: [Zone Labs Client] C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
O4 - HKLM\..\Run: [SYSKM.EXE] C:\WINDOWS\SYSTEM\SYSKM.EXE
O4 - HKLM\..\Run: [intell32.exe] C:\WINDOWS\SYSTEM\intell32.exe
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [TrueVector] C:\WINDOWS\SYSTEM\ZONELABS\VSMON.EXE -service
O4 - HKLM\..\RunServices: [SYSMV.EXE] C:\WINDOWS\SYSTEM\SYSMV.EXE /s
O4 - HKCU\..\Run: [msnmsgr] "C:\PROGRAM FILES\MSN MESSENGER\MSNMSGR.EXE" /background
O4 - Startup: Microsoft Works Calendar Reminders.lnk = C:\Program Files\Common Files\Microsoft Shared\Works Shared\wkcalrem.exe
O16 - DPF: {C36112BF-2FA3-4694-8603-3B510EA3B465} (Lycos File Upload Component) - http://f007.mail.lycos.co.uk/app/uploader/FileUploader.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=36467&clcid=0x409
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmesse…pdownloader.cab