www.pestpatrol.com
This works far better than manually editing the registry. This program has been a part of my system for four years now and aside from detecting all my MP3 as having baligerant ware, (RIAA Spy ware) and recommending they be removed, it has saved my computer from thousands of spy ware, adware, trojans, and other pests.
I do recommmend buying it and using it if you are worried about such things as listed above.