Logfile of HijackThis v1.99.1
Scan saved at 12:24:55, on 23.03.2005
Platform: Windows 2000 SP1 (WinNT 5.00.2195)
MSIE: Internet Explorer v5.00 (5.00.2920.0000)

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\spoolsv.exe
C:\Programme\AVPersonal\AVWUPSRV.EXE
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\Explorer.exe
C:\Programme\AVPersonal\AVGNT.EXE
C:\WINNT\System32\internat.exe
C:\Programme\Winzip\WZQKPICK.EXE
C:\Programme\Outlook Express\msimn.exe
C:\Programme\Internet Explorer\IEXPLORE.EXE
C:\WINNT\System32\rundll32.exe
C:\Programme\AVPersonal\AVGUARD.EXE
C:\WINNT\System32\notepad.exe
C:\Dokumente und Einstellungen\Administrator\Desktop\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer,(Default) = http://targetclicks.net/srch.php?qq=%s
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\DOKUME~1\ADMINI~1\LOKALE~1\Temp\se.dll/sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://yoursearch.ws/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\DOKUME~1\ADMINI~1\LOKALE~1\Temp\se.dll/sp.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,Default_Search_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
O2 - BHO: (no name) - {ECD2F6B2-4526-48AC-A37A-C9B14FCCD8E7} - C:\WINNT\System32\gkfc.dll
O3 - Toolbar: @msdxmLC.dll,-1@1031,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: FreshBar - {06ABAA2D-34AB-4902-A326-409BD9B9A7A5} - C:\WINNT\System32\docntrop.dll (file missing)
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [sp] rundll32 C:\DOKUME~1\ADMINI~1\LOKALE~1\Temp\se.dll,DllInstall
O4 - HKLM\..\Run: [AVGCtrl] C:\Programme\AVPersonal\AVGNT.EXE /min
O4 - HKCU\..\Run: [internat.exe] internat.exe
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Programme\Winzip\WZQKPICK.EXE
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
O14 - IERESET.INF: SEARCH_PAGE_URL=
O14 - IERESET.INF: START_PAGE_URL=
O16 - DPF: {10003000-1000-0000-1000-000000000000} - ms-its:mhtml:file://C:\foo.mht!http://bin.wordsx.cc/fQUzaTmuM97rrVj...::/on-line.exe
O16 - DPF: {11111111-1111-1111-1111-111111111157} - ms-its:mhtml:file://c:\nosuch.mht!http://hitscount.net/fa/x.chm::/load.exe
O16 - DPF: {11212111-2121-1311-1141-115611111222} - ms-its:mhtml:file://d: oo.mht!http://69.50.166.213/users/bond/web/...m::/update.exe
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/S...in/AvSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/S.../bin/cabsa.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{5D8CEC05-2BC0-4D46-960D-1E0DBD152406}: NameServer = 69.50.188.180,195.225.176.37
O17 - HKLM\System\CCS\Services\Tcpip\..\{74DD7955-53F9-4286-9048-5FAE44C3CCFF}: NameServer = 69.50.188.180,195.225.176.37
O17 - HKLM\System\CS1\Services\VxD\MSTCP: NameServer = 69.50.188.180,195.225.176.37
O17 - HKLM\System\CS2\Services\VxD\MSTCP: NameServer = 69.50.188.180,195.225.176.37
O17 - HKLM\System\CCS\Services\VxD\MSTCP: NameServer = 69.50.188.180,195.225.176.37
O18 - Filter: text/html - {AE2472B7-58C7-4E92-ACA7-52998F2C04D7} - C:\WINNT\System32\gkfc.dll
O18 - Filter: text/plain - {AE2472B7-58C7-4E92-ACA7-52998F2C04D7} - C:\WINNT\System32\gkfc.dll
O21 - SSODL: WYlmuyqdv - {EC92732F-4638-D985-1992-DA8EBFDF3C69} - C:\WINNT\System32\bkx.dll (file missing)
O23 - Service: AntiVir Service (AntiVirService) - H+BEDV Datentechnik GmbH - C:\Programme\AVPersonal\AVGUARD.EXE
O23 - Service: AntiVir Update (AVWUpSrv) - H+BEDV Datentechnik GmbH, Germany - C:\Programme\AVPersonal\AVWUPSRV.EXE
O23 - Service: Verwaltungsdienst für die Verwaltung logischer Datenträger (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe

Zuallererst ist dein OS total veraltet, deswegen bitte wie folgt vorgehen:

1.Service Pack 4 downloaden und installieren
2.Windowsupdateseite besuchen und alle noch vorhandenen wichtigen Updatzes downloaden.
3.Abarbeiten was auf dieser Seite beschrieben ist.
4. Neuen Hijackthis-Log erstellen und in diesem Thread posten