Yah, so clean the surface off with something like a credit card.
Then use an extreamly pure(for best results) acholhol (sp really bad) and use a non lint cloth to get it as close to a mirror finish as possible(clean). Use a blow drier or leave it for awhile to make sure that it is dry, then follow the instructions on Artic silvers site to apply the paste and HSF. Finish, install windows and games and play for 10 hours straight to justify your purchase 😀