I have known for a long time that one could use a linux live cd like Knoppix and run an antivirus from there to remove persistent infections that sometimes would be tedious to remove from within Windows. However, I have never got a chance to test it out because my computers where not infected. However, when I noticed virus processes in task manager today, I knew this was an opportunity to try it.
I downloaded Knoppix STD (from here) and burnt it to a CD. I booted Knoppix from the live cd and ran a Clamwin scan. I worked nicely and removed my infected files. Overall, the process was successful, yet I thought that the Clamwin scan took much longer than I expected.