I would use thermal tape and heatshrink, should be much better than using thermal grease and heatshrink. I dont know if they sell them by themselves but if not you can usually get that and a fan or heatshenk for $5. In fact I think they have one at compusa with: small fan, two heatshinks, thermal tape, thermal grease, for like $5. It's package is one of those generic ones, just saying compusa.
Box like this:
http://www.compusa.com/products/prod...287&pfp=SEARCH
Do you have a compusa near you? Or any computer store.
thunderw0lf: Newegg is awsome, my dad and I shop there all the time (spent about $1,000 making a computer).