First Time Build Help

[supra21]

Gonna build a pc i want it to be as quite as possible thats the main aim of the new build. I have got the case (Antec P182), i just need help with the other components. These are the ones that i am planning on buying:

CPU:
Intel Core 2 Quad Pro Q6600

Mobo:
Abit Fatal1ty FP-IN9 SLi nForce 650

Ram:
GeIL 2GB PC6400C4

GPU:
GeForce 8800 GTS 320MB

PSU:
OCZ GameXStream 600w

HDD:
Hitachi Deskstar T7K500 NCQ 250GB SATA-II

DVD:
Samsung SH-S203BEBN 20x20 DVD±RW Dual Layer Serial ATA ReWriter

I will be doing moderate gaming on this machine, minor overclocking and i will be using windows vista.

1. Is the motherboard i picked good? is there a cheaper more suitable one?
2. Do i need a 600w psu?, or do i need more/less? Is there a cheaper option?
3. Is the stock cooler of the CPU loud?, If it is i want to replace with a Noctua NH-U12F; will this fit on the Abit Fatal1ty FP-IN9?

Any help will be great!

 

[supra21]

why a a P35 Motherboard? and will 520w be enough if i decide to do sli in the future?

 

[supra21]

ok thanks for all the help!

 

[supra21]

vista ultimate

 

[supra21]

recevied my case today and looking inside i wish to add another 120mm fan onto the top hard drive cage. The case included some wire clips which allow you to do this; my question is will the Noctua NF-S12 fit on the cage with the wire clips that the Antec p182 provided?