I'm bored............so here is a short answer:
HAVE YOU SCANNED YOUR COMPUTER IN SAFE MODE???!!!
If you haven't try going to safe mode, which opens Windows in a raw state.
You simply do this by restarting your computer. Before the Windows logo starts loading, press F8. Select Safe Mode. Then there will be a list asking you to choose as Administrator or your normal account. Choose Admin. I think you can scan with your "stuff" now and remove the infection.
Also try renaming mbam.exe to xxx.exe and scanning. (Normal mode.)
NOTE!!!: If you have AVG free Edition, download an Anti-Rootkit.
Get these before you go to Safe Mode. Also Update your virus signatures.
Here's a few:
-F-Secure Blacklight: http://www.f-secure.com/blacklight/
-Microsoft Malware Removal Tool: type mrt in RUN on Command
-ThreatFire: http://www.threatfire.com/
Scan and remove!!!