Browser hacked

Hello All

My browser is hacked. when ever I open IE its connecting to some search Engine like www.coolsearch.com etc etc....

And in Task Manager simultaneously various sites are getting opened and making system process very slow.

I run a anti virus software called HiJackeThis. It shows the following report at the end

Cud u pls tell me what are the files I have to delete i.e unimportant
**********************
Logfile of HijackThis v1.97.7
Scan saved at 1:43:57 AM, on 3/15/2001
Platform: Windows 2000  (WinNT 5.00.2195)
MSIE: Internet Explorer v5.00 (5.00.2920.0000)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\csrss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\System32\msdtc.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\System32\llssrv.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\inetsrv\inetinfo.exe
C:\WINNT\system32\Dfssvc.exe
C:\WINNT\System32\taskmgr.exe
C:\WINNT\Explorer.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Trojan Remover\Trjscan.exe
C:\Program Files\QuickTime\qttask.exe
C:\WINNT\System32\npbgbw.exe
C:\Program Files\WindUpdates\WinUpdt.exe
C:\Program Files\a2\a2guard.exe
C:\WINNT\System32\services\msxmidi.exe
C:\Documents and Settings\Administrator\Application Data\lrtd.exe
C:\Program Files\WindUpdates\WinKA.exe
C:\WINNT\System32\svchost.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\eLitecore\Cyberoam Client for 24Online\CyberoamClient.exe
C:\ToolsDownloads\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer,SearchURL = http://mega.directwebsearch.net/search.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://mega.directwebsearch.net/search.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://mega.directwebsearch.net/search.php
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://mega.directwebsearch.net/index.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = C:\WINNT\secure.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://mega.directwebsearch.net/search.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://mega.directwebsearch.net/search.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://mega.directwebsearch.net/search.php
R1 - HKLM\Software\Microsoft\Internet Explorer,SearchURL = http://mega.directwebsearch.net/search.php
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://mega.directwebsearch.net/index.php
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://mega.directwebsearch.net/search.php
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://mega.directwebsearch.net/search.php
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = C:\WINNT\secure.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://mega.directwebsearch.net/search.php
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://mega.directwebsearch.net/search.php
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://mega.directwebsearch.net/search.php
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINNT\secure.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINNT\secure.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer,Search = http://mega.directwebsearch.net/search.php
R1 - HKLM\Software\Microsoft\Internet Explorer,Search = http://mega.directwebsearch.net/search.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,SearchAssistant = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,SearchAssistant = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Search,(Default) = about:blank
F1 - win.ini: run=C:\WINNT\System32\services\msxmidi.exe
O2 - BHO: (no name) - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINNT\nem219.dll (file missing)
O2 - BHO: (no name) - {000020DD-C72E-4113-AF77-DD56626C6C42} - C:\WINNT\twaintec.dll
O2 - BHO: (no name) - {5321E378-FFAD-4999-8C62-03CA8155F0B3} - (no file)
O2 - BHO: (no name) - {83DE62E0-5805-11D8-9B25-00E04C60FAF2} - C:\WINNT\2_0_1browserhelper2.dll
O2 - BHO: (no name) - {A3FDD654-A057-4971-9844-4ED8E67DBBB8} - C:\Program Files\SideFind\sfbho.dll
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe"  -osboot
O4 - HKLM\..\Run: [TrojanScanner] C:\Program Files\Trojan Remover\Trjscan.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [winupd] C:\WINNT\System32\winupd.exe
O4 - HKLM\..\Run: [hgxwteamrmasq] C:\WINNT\System32\npbgbw.exe
O4 - HKLM\..\Run: [WindUpdates] C:\Program Files\WindUpdates\WinUpdt.exe
O4 - HKLM\..\Run: [xpsystem] C:\WINNT\System32\services\msxmidi.exe
O4 - HKCU\..\Run: [IridiumTimeWizard] C:\\iridium.exe
O4 - HKCU\..\Run: [a²] "C:\Program Files\a2\a2guard.exe"
O4 - HKCU\..\Run: [Rbrt] C:\Documents and Settings\Administrator\Application Data\lrtd.exe
O4 - HKCU\..\Run: [xpsystem] C:\WINNT\System32\services\msxmidi.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O4 - Global Startup: 24Online Client.lnk = C:\Program Files\eLitecore\Cyberoam Client for 24Online\CyberoamClient.exe
O8 - Extra context menu item: Shorten URL - http://www.cjb.net/menuext.html
O9 - Extra button: SideFind (HKLM)
O9 - Extra button: Yahoo! Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Yahoo! Messenger (HKLM)
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O13 - DefaultPrefix:
O13 - WWW Prefix:
O15 - Trusted Zone: *.blazefind.com
O15 - Trusted Zone: *.clickspring.net
O15 - Trusted Zone: *.flingstone.com
O15 - Trusted Zone: *.mt-download.com
O15 - Trusted Zone: *.my-internet.info
O15 - Trusted Zone: *.searchmiracle.com
O15 - Trusted Zone: *.skoobidoo.com
O16 - DPF: {02BF25D5-8C17-4B23-BC80-D3488ABDDC6B} (QuickTime Object) - http://www.apple.com/qtactivex/qtplugin.cab
O16 - DPF: {11010101-1001-1111-1000-110112345678} - ms-its:mhtml:file://c:\nosuch.mht!http://69.50.173.252/bonus.chm::/winpromo.exe
O16 - DPF: {11111111-1111-1111-1111-111111111157} - ms-its:mhtml:file://c:\nosuch.mht!http://super-gals.com/scj/rotation/templates/s/x.chm::/ad.exe
O16 - DPF: {11111111-1111-1111-1111-111111111171} - ms-its:mhtml:file://c:\\nosuch.mht!http://line-plus.com/newhelp.chm::/newhelp.exe
O16 - DPF: {11120607-1001-1111-1000-110199901123} - ms-its:mhtml:file://c:\nosuch.mht!http://www.2awm.com/file/colinwork.chm::/on-line.exe
O16 - DPF: {15AD4789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://public.windupdates.com/get_file.php?bt=ie&p=0c8af29cad1529a0c2f12262efe492244d317f6ab2c86bff7585b7e883263ddf35912dd813dee463c744961d2b31add589650eef4d876c0fc2a2f745d64562:c31e3730b38c174130e1e2729109a237
O16 - DPF: {706F3805-27D7-478D-80E5-E25D2BB030B3} (VacPro.internazionale_ver3) - http://www.advnt01.com/dialer/internazionale_ver3.CAB
O16 - DPF: {9EB320CE-BE1D-4304-A081-4B4665414BEF} - http://www.mt-download.com/MediaTicketsInstaller.cab
O16 - DPF: {A17E30C4-A9BA-11D4-8673-60DB54C10000} (YahooYMailTo Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yse/ymmapi_416.dll
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{BD03053B-1CA0-4B10-B5F8-EF2299823390}: NameServer = 172.20.0.1