Latley I was interested in water cooling. I have a p4 2.8 ghz with 1.5 gbs of ram and a radeon 9700 pro. etc. I wanted to cool down my system as it builds up a lot of heat. Even with tons of fans it still don't seem to help. Well latley I been going to COMPUSA and noticed there water cooling set ups. They seem to really help with cooling down the computer and helping solve heat issues. Now here is my question.... 1. Wich water cooling system should I get? ( i say 2 of them at compusa one is a external and one is built into the case ,sorry I forgot the names of them) 2. What is the difficulty level of installing a water cooling system? I am able to build my own computer from ground up but never worked with a water cooling system. 3. Whats a good site or place to buy a good water cooling system? 4. I heard the ones at compusa I need to buy add ons called water blocks , what are those and what do they do? Thank you for the help.