My boss at work is in a generous mood again, and is considering upgrading my PC for me. He has a wonderful habit of spending large amounts of money on his subordinates to get them stuff they like or need. In my case, I get PC upgrades. It looking like Ill be getting a new eVGA Socket AM2 motherboard and an Athlon 64 X2 6000, as well as 4GB of new DDR2 RAM. He is also considering swapping out my eVGA 8800GTX ACS3 for the BFG water-cooled 8800 Ultra. For reference, here are the current specs on my PC: MSI K8N Neo4 Platinum SLI Motherboard (Skt. 939) Athlon 64 X2 4800+ 4 GB (4x1GB) Corsair XMS RAM (DDR400) eVGA GeForce 8800GTX ACS3 Thermaltake Toughpower 750w PSU Thermaltake Armor silver all-aluminum case If he gets me the new 8800Ultra with the preinstalled water block, then I will be water-cooling the CPU and video card. If not, then Ill probably just stick to water cooling the CPU. However, I have NO experience with water cool systems. I know my case is designed for water cooling, and even has a drop-in kit from thermaltake available, but I remember seeing a bad review of that kit some time back. Ive heard good things about Danger Den, and have been looking around their online store. I know the basic parts needed, but Im not sure what I should get. How big of a radiator do I need, how hard would it be to isolate the CPU and GPU on different cooling loops (since the 8800s run so damn hot), etc. Any advice or suggestions would be greatly appreciated.