Well finally got everything sorted! I dont know what was wrong with the power supply but the new one doesnt have any problems. It all seems to be running smoothly and vista seems to be managing the drivers ok too. Might try and overclock the processor a bit though not too bothered since I dont really do anything which would need the extra power at the minute. The gts seems to be making the box run quite hot but I have installed a third fan and its still sooo quiet.
Yes. I have an 8800 GTX in my Sugo and heat is an issue even with the the three 80mm and PSU fan. I have the Enzotech Ultra X but might try the Zalman CNPS8000 active HSF when I swap motherboards. The GTX runs a good 5 to 7 C higher in the Sugo than it did in my main rig, which now houses an 8800 Ultra. BTW. The 8800 Ultra will fit in my HD cage-modded Sugo but it will probably fry itself since it runs 57C idle and 75C load in my main rig.
I took the SilverStone fan that was attached to the HD cage and placed it on the second opening above the expansion card area. I installed a Thermaltake 75 CFM Smart Case Fan II on the HD cage which runs at roughly 60% of max RPM.