Patient: Doctor, it hurts when I do this.
Doctor: Then don't do that!
USAFRet is right, if you keep downloading the same sorts of infected files, you will achieve the same results. Torrented files often come with extra stuff (mostly bad) installed.
Short of a clean install, you should remove the questionable applications fully, including the setup files. Then, use the stand alone scanner (AVG Rescue CD linked earlier) and clean your rig.