Well, let's cut to the chase shall we? If you have a smaller heat sink, you can start by attaching it onto the airport card. Be firm and hold it on for a few seconds, but be gentle. The next step is adding what is defiantly going to help cool it. Press down on it a bit more firm than last time, but again being gentle with it aswell. Make sure they are stuck on there and that's about all you have to do.