Antivirus 2009 is a new one. Seems these fellows are determined to knacker peoples PCs. Some goal in life eh?
All I can suggest is to run rogueremover free; click here remember to update first.
Run superantispyware; click here , update first.
Run both programs in safe mode. Rogueremover first then superantispyware.
Reboot to safemode again then run your Antivirus program.