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Danke für die prompte Antwort, anbei die von HiJacjThis erstellte Liste:
Logfile of HijackThis v1.97.7
Scan saved at 11:59:36, on 26.12.03
Platform: Windows 98 SE (Win9x 4.10.2222A)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\PROGRAMME\GEMEINSAME DATEIEN\SOFTWIN\BITDEFENDER COMMUNICATOR\XCOMMSVR.EXE
C:\PROGRAMME\GEMEINSAME DATEIEN\SOFTWIN\BITDEFENDER SCAN SERVER\BDSS.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\PROGRAMME\REAL\REALPLAYER\REALPLAY.EXE
C:\PROGRAMME\GEMEINSAME DATEIEN\ADAPTEC SHARED\CREATECD\CREATECD50.EXE
C:\PROGRAMME\ADAPTEC\EASY CD CREATOR 5\DIRECTCD\DIRECTCD.EXE
C:\PROGRAMME\GEMEINSAME DATEIEN\CMEII\CMESYS.EXE
C:\WINDOWS\SYSTEM\QTTASK.EXE
C:\PROGRAMME\TROJANCHECK 6\TCGUARD.EXE
C:\PROGRAMME\SOFTWIN\BITDEFENDER PROFESSIONAL EDITION\BDMCON.EXE
C:\PROGRAMME\SOFTWIN\BITDEFENDER PROFESSIONAL EDITION\VSSERV.EXE
C:\PROGRAMME\NOPOPUP 2001\NOPOPUP.EXE
C:\PROGRAMME\MICROSOFT OFFICE\OFFICE\OSA.EXE
C:\PROGRAMME\MICROSOFT OFFICE\OFFICE\FINDFAST.EXE
C:\PROGRAMME\OLYMPUS\CAMEDIA MASTER 4.1\CM_CAMERA.EXE
C:\PROGRAMME\GEMEINSAME DATEIEN\GMT\GMT.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\ANTIVIR\UNTERSUCHUNGSPROGRAMM\HIJACKTHIS.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer,SearchURL = http://sharempeg.com/find/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://searchbar.findthewebsiteyouneed.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.orf.at/
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://sharempeg.com/find/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.24speed.at/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer von LIWEST Kabelmedien GmbH
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = http://www.search-2003.com/
O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - (no file)
O2 - BHO: (no name) - {000004CC-E4FF-4F2C-BC30-DBEF0B983BC9} - (no file)
O2 - BHO: myBar BHO - {0494D0D1-F8E0-41ad-92A3-14154ECE70AC} - (no file)
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\PROGRAMME\ADOBE\ACROBAT 5.0\READER\ACTIVEX\ACROIEHELPER.OCX
O3 - Toolbar: (no name) - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O3 - Toolbar: (no name) - {0494D0D9-F8E0-41ad-92A3-14154ECE70AC} - (no file)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [RealTray] C:\Programme\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [WinampAgent] "C:\Programme\Winamp3\winampa.exe"
O4 - HKLM\..\Run: [CreateCD50] "C:\Programme\Gemeinsame Dateien\Adaptec Shared\CreateCD\CreateCD50.exe" -r
O4 - HKLM\..\Run: [AdaptecDirectCD] "C:\Programme\Adaptec\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [CMESys] "C:\PROGRAMME\GEMEINSAME DATEIEN\CMEII\CMESYS.EXE"
O4 - HKLM\..\Run: [QuickTime Task] "C:\WINDOWS\SYSTEM\QTTASK.EXE" -atboottime
O4 - HKLM\..\Run: [OmgStartup] C:\Programme\Gemeinsame Dateien\Sony Shared\OpenMG\OmgStartup.exe
O4 - HKLM\..\Run: [MediaLoads Installer] "C:\Programme\DownloadWare\dw.exe" /H
O4 - HKLM\..\Run: [Trojancheck 6 Guard] C:\PROGRAMME\TROJANCHECK 6\TCGUARD.EXE
O4 - HKLM\..\Run: [BDMCon] C:\PROGRA~1\SOFTWIN\BITDEF~2\BDMCON.EXE
O4 - HKLM\..\Run: [BitDefender Virus Shield] C:\Programme\Softwin\BitDefender Professional Edition\\vsserv.exe
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [BitDefender Live! Init] C:\Programme\Softwin\BitDefender Professional Edition\\bdinit.exe
O4 - HKLM\..\RunServices: [BitDefender Communicator] C:\Programme\Gemeinsame Dateien\Softwin\BitDefender Communicator\\xcommsvr.exe
O4 - HKLM\..\RunServices: [BitDefender Scan Server] C:\Programme\Gemeinsame Dateien\Softwin\BitDefender Scan Server\\bdss.exe
O4 - HKCU\..\Run: [NoPopUp] C:\PROGRAMME\NOPOPUP 2001\NOPOPUP.EXE /autorun
O4 - Startup: Office-Start.lnk = C:\Programme\Microsoft Office\Office\OSA.EXE
O4 - Startup: Microsoft-Indexerstellung.lnk = C:\Programme\Microsoft Office\Office\FINDFAST.EXE
O4 - Startup: CAMEDIA Master.lnk = C:\Programme\OLYMPUS\CAMEDIA Master 4.1\CM_camera.exe
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O9 - Extra button: Real.com (HKLM)
O12 - Plugin for .pdf: C:\PROGRA~1\INTERN~1\PLUGINS\nppdf32.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.24speed.at/
O16 - DPF: {00000000-663f-49e8-bdf6-f26db51c7dd5} -
O16 - DPF: {94742E3F-D9A1-4780-9A87-2FFA43655DA2} - http://fr4-scripts.downloadv3.com/bi...DHTML_pack.cab
O16 - DPF: {02C20140-76F8-4763-83D5-B660107B7A90} (Loader Class) - http://connect.online-dialer.com/MaConnect.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/s...sh/swflash.cab
O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) - http://download.macromedia.com/pub/s...irector/sw.cab
O16 - DPF: {00000000-CDDC-0704-0B53-2C8830E9FAEC} (IELoaderCtl Class) - http://install.global-netcom.de/ieloader.cab
O16 - DPF: {67B15B0B-160C-4579-95AF-858169659092} (IELoaderCtl Class) - http://freeload.cc/secure/ieloader.cab
O16 - DPF: {FFFF0003-0001-101A-A3C9-08002B2F49FB} - http://www.sex-moviez.com/DESEX1.exe
O16 - DPF: {80DD2229-B8E4-4C77-B72F-F22972D723EA} (AvxScanOnline Control) - http://www.bitdefender.com/scan/Msie/bitdefender.cab

Besten Dank bereits im voraus