Building a pc somebody?

Need urgent help with this one... i have assembled components which i think will suit my needs. if theres somebody out there that can help with any compatibility issues and general advice, i would be most grateful! here are the specs+links: processor: intel core 2 quad q6600 2.4ghz 95w g0 stepping retail 775 motherboard: ecs 650islit-a nforce 650 lga socket 775 ocz 4gb kit (2x2048) nvidia sli - ready edition: graphics card: gigabyte geforce 8600 gt silent fanless 512mb hard drives: western digital caviar 500gb s300 16mb 7200rpm(x2) dvd burners: liteon lh-20a1s-10c 20x dvdrwram sata beige (x2) case: thermaltake soprano secc silver, window vb1000sws os: ms vista ultimate (oem) psu: (no idea whats suitable here!) also, what kind of cabling is required? and where can i find a powerful,quiet yet cheap power supply unit? cheers!
Answer
make sure your vista is 64bit, otherwise it wont use all your ram. a 600w psu will do you fine and be nice for future urgrades. try and squeeze another £50 into your budget and get a 8800gt, the 8600 is pretty weak. will be a top machine then!