HijackThis
HijackThis is a free system tweaking utility that is very useful in the
removal of various pests, particularly of the adware/spyware/browser hijacking
variety. However, it has no automated detection or removal capabilities
and requires expert knowledge to be used effectively (and safely.) It is
recommended that the program be used only under expert guidance. The
current version, which now belongs to TrendMicro, can be
downloaded by clicking
here.