This would be my first time, whats the chances of a leak? and using non conductive coolant, if it were to leak, whats the worst that can happen to my components? would they seize to work?
Assemble it all on a sink or something, just the loop by itself, leaktest there. It's much easier and less frantic than trying to mop up your motherboard if everything leaks. Jump-start the PSU to run just the pump, that way you can fill the loop, and if anything does leak; it's not receiving any power to short circuit with. Non Conductive coolant isn't really that nonconductive, it's just got very high resistance, stuff can still short through it, however.
The easiest way is to get a water cooling kit from Specialtech. http://specialtech.co.uk/spshop/customer/Water-Cooling-Kits-cid-1196.html
thanks would one of those kits and watercooling in general require a bigger PSU or that much more power? as I only got 500w
The pump itself shouldn't demand too much power, just a couple of amps on the 12V line. I think your system would be happy with it.
They don't have to, but however you have it; you want the Reservoir to be the highest point in the loop, so any trapped air builds up there, where it's easy to replace with more coolant.