Sync, that's great. Well, I wasn't born knowing about computers, and like this person, I am on this forum obviously to learn a bit more.
So let's try not to be hard on him.
I would find a comp shop that's NOT a big chain and spend the small cash (my builder would prolly do it for 10-15 bucks at most) for someone else to change your stock heatsink pad or grease over to thermal grease (not adhesive). I would reccomend using arctic 5 of course. If I had as little knowledge that you do (and I used to) I would not personally open the PC without someone that knew a little bit more about them at hand.
That's just my opinion, I worked hard for my money to purchase all my computers and it would not be worth it if I messed one of them up not knowing what I was doing.
Stick around the forums, you will learn a lot, I did.