is the file running in the Task Manager ? If it is End the Process and try again, if that doesnt work, download a free AV scanner (AVG 6.0 is very good) and boot into safe mode (press F8 while the computer is booting up), that will disable any un-neccessary services and programs to run at strat-up, so that the chance that thevirus will be in use then is slim to none Scan your computer and delete the virus

Goo luck dude !