If you have a mirror image backup of the system or a backup of the Windows drive, then restore that so you can have a decent working system.
If you have neither, and have nothing of consequence on the system, a wipe and clean install of Windows would be a consideration.
If you have irreplacable documents/files, you should copy them onto removable media first.
Otherwise, depending on whether it is one rogue or not, and if you can be patient, make a detailed post with reports at
See Preparation Guide For Use Before Using Hijackthis and other Malware Removal Tools
Be very aware the sub-forum is extremely busy and you'll have to wait your turn.P.S.
You may try renaming mbam.exe to some other unique name, and then starting it, you may get MBAM to start, and if so, then do a Full scan, and let it remove what it find.
Edited by Maurice Naggar, 17 May 2009 - 02:37 PM.