I was recently infected by a bad virus-kept coming back and everytime I removed it I got infected again. Tried all sorts of programs to remove it but no use. Finally combofix came to my rescue.
The analysis of the log needs some expertise but its well worth it..
Yes, I've been using Combofix for years. It can also restore your disabled access to something like task manager, folder option, regedit, etc.. you guys can also use SDfix.