My ie explorer is hijacked!!!!!

hi all,
when i click some submit button or links, my IE generation some pop ups to some sites like casino sites with some security warnings. the nslookup says the IP is related to netvenda.com or some thing similar. It doesnt happens all times, but occassionaly happens. its very anoying what to do??? my HijackThis log is given below:

Logfile of HijackThis v1.98.0
Scan saved at 5:52:20 PM, on 7/11/2004
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
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:\WINNT\System32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINNT\System32\inetsrv\inetinfo.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
D:\Program Files\Norton AntiVirus\navapsvc.exe
D:\Oracle\Ora81\BIN\OWASTSVR.EXE
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\snmp.exe
C:\WINNT\System32\snmptrap.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
F:\Program Files\Real\RealOne Player\realplay.exe
F:\Program Files\Real\RealJukebox\tsystray.exe
D:\Program Files\Winamp3\winampa.exe
D:\program files\QuickTime\qttask.exe
C:\Program Files\Screendragon VS5\VS5 Taskbar.exe
C:\WINNT\system32\ctfmon.exe
C:\Program Files\Realtek\Rtl8180\RtlWake.exe
D:\Program Files\WinZip\WZQKPICK.EXE
C:\WINNT\system32\wuauclt.exe
D:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
C:\WINNT\system32\taskmgr.exe
C:\WINNT\system32\mspaint.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINNT\explorer.exe
F:\zam\Hijack This\hijackthis\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://search.media-search.net/nph-...k=sbar1_srchbtn
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://search.media-search.net/nph-...ook=stmpl1&find=
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.microsoft.com/isapi/redi...er=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://search.media-search.net/nph-...ook=stmpl1&find=
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://search.media-search.net/nph-...k=sbar1_srchbtn
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://search.media-search.net/nph-...ook=stmpl1&find=
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redi...B_PVER}&ar=home
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://search.media-search.net/nph-...ook=stmpl1&find=
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://search.media-search.net/nph-...ook=stmpl1&find=
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://search.media-search.net/nph-...ook=stmpl1&find=
R1 - HKLM\Software\Microsoft\Internet Explorer\SearchURL,(Default) = hhttp://search.media-search.net/nph-search.cgi?track=mssrc&look=stmpl1&find=
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.real.com/products/realon...rp8bpBG_v1.html
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *hot-searches.com*;*lender-search.com*
R3 - URLSearchHook: WebSearch Class - {9368D063-44BE-49B9-BD14-BB9663FD38FC} - C:\Program Files\se\v11\se.DLL
O1 - Hosts file is located at: C:\WINNT\nsdb\hosts
O1 - Hosts: 81.211.105.69 lender-search.com
O1 - Hosts: 81.211.105.68 hot-searches.com
O2 - BHO: WebBho Class - {00041A26-7033-432C-94C7-6371DE343822} - C:\Program Files\se\v11\se.DLL
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - D:\PROGRA~1\Yahoo!\COMPAN~1\Installs\cpn\ycomp5_3_12_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: MediaPops Class - {85A702BA-EA8F-4B83-AA07-07A5186ACD7E} - C:\Program Files\MediaLoads Enhanced\ME2.DLL
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: BrowserHelper Class - {EBCDDA60-2A68-11D3-8A43-0060083CFB9C} - C:\WINNT\System32\nzdd.dll
O3 - Toolbar: &Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - D:\PROGRA~1\Yahoo!\COMPAN~1\Installs\cpn\ycomp5_3_12_0.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [RealTray] f:\Program Files\Real\RealOne Player\realplay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [RealJukeboxSystray] "f:\Program Files\Real\RealJukebox\tsystray.exe"
O4 - HKLM\..\Run: [WinampAgent] "D:\Program Files\Winamp3\winampa.exe"
O4 - HKLM\..\Run: [MediaLoads Installer] "C:\Program Files\DownloadWare\dw.exe" /H
O4 - HKLM\..\Run: [DownloadWare] "C:\Program Files\DownloadWare\dw.exe" /H
O4 - HKLM\..\Run: [Media-Search] "C:\Program Files\msnet\v9\msnet.EXE" /H
O4 - HKLM\..\Run: [Search-Exe] "C:\Program Files\se\v11\se.EXE" /H
O4 - HKLM\..\Run: [QuickTime Task] "D:\program files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SDTaskbar] "C:\Program Files\Screendragon VS5\VS5 Taskbar.exe"
O4 - HKCU\..\Run: [ctfmon.exe] ctfmon.exe
O4 - HKCU\..\Run: [Yahoo! Pager] D:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
O4 - Global Startup: Microsoft Office.lnk = D:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: RealDownload.lnk = F:\Program Files\Real\RealDownload\Realdownload.exe
O4 - Global Startup: RtlWake.lnk = C:\Program Files\Realtek\Rtl8180\RtlWake.exe
O4 - Global Startup: WinZip Quick Pick.lnk = D:\Program Files\WinZip\WZQKPICK.EXE
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - D:\Program Files\Yahoo!\Messenger\yhexbmes0521.dll
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - D:\Program Files\Yahoo!\Messenger\yhexbmes0521.dll
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {88D969C0-F192-11D4-A65F-0040963251E5} (XML DOM Document 4.0) - file://C:\TempEI4\EI40_\msxml4.cab
O16 - DPF: {8AD9C840-044E-11D1-B3E9-00805F499D93} (Java Runtime Environment 1.4.0_01) -
O16 - DPF: {A17E30C4-A9BA-11D4-8673-60DB54C10000} (YahooYMailTo Class) - http://us.dl1.yimg.com/download.yah.../ymmapi_416.dll
O16 - DPF: {B9191F79-5613-4C76-AA2A-398534BB8999} (YAddBook Class) - http://us.dl1.yimg.com/download.yah...utocomplete.cab
O16 - DPF: {CAFEEFAC-0014-0000-0001-ABCDEFFEDCBA} (Java Runtime Environment 1.4.0_01) -



O18 - Filter: text/html - {4F7681E5-6CAF-478D-9CB8-4CA593BEE7FB} - C:\WINNT\system32\xplugin.dll

Hey,

None checks the log?????