i just give u the 'picture in my mind' how i can made custom water cooling system for CPU...this is only the basic ideas..which not guaranteed in any condition on how its will works...ok... 1. u need ready made water block or u can custom yourself using copper block and cmm like this modder: CLICK ME 2. some fittings and hose 3. water pump (u can look at in-water 'submerse type' aquarium water pump) plus small aquarium to put this pump in (submerse in cooling liquid), u should put this thing out of CPU, unless u make it leaking proof! - u have to test the water cycle to ensure its similar to ready made water cooling pump...using chrono and bottle to measure its cycle or u can just simply find the one with water cycle spec sheet, so u dont need to test it. 4. water container (i think, clear type water filter casing should be help) have many type of them. 5. radiator(this thing u only can find at the automotive chop-shop) actually this is heating coil elements made from alloy in the japanese chop's car. they throw out this thing since we dont need them here...u can use this thing as a radiator. i alwez can find this thing threw out at workshop when they do dashboard conversion. 6. fan for the radiator...u choose 7. cooling liquid or you can just use automotive radiator coolant liquid! my frend used to use this radiator liquid- cheap his said...hehehe the rest, u have to think how to make it works! good luck and may god bless u all