Hey hey, I've often seen pics of machines that use water cooling to keep those babies chilled. My questions are however: 1. When does it become necessary to use water cooling? 2. What different types are there. 3. How much do they run. 4. Are they hard to put in? As a PC guy I like tp put em together but I've never really stepped into this grey area of building. I think maybe one day I'd like to Mod my own PC from scratch...maybe some red lights and a nice case to boot....but I've always been interested in water cooling.. So what say you water coolers... Howz it work.