Yep. Might try to run those programs in safe mode (press F8 repeatedly just after booting to access it), or try to turn of automatic system restore before scanning ([windows-key] + [pause], system restore, deactivate on all drives, ok). Don't forget to turn it back on after successful spy-stuff removal.
Tell your father not to click on everything.
You may also keep windows up2date (
http://windowsupdate.microsoft.com) and use a virus scanner (e.g.
http://www.free-av.com)