Ram: OCZ Gold 2x1gb 5-5-5-15 @ ~90$. Ditch the 2x2gb, unless you're planning on doing some heavy video editing in the near future. And if you do buy 1x 2gb, you can say goodbye to Dual Channel (not DDR2, Barb) and watch the drop in performance.
VC: evga 8800GTS 320mb, or the 640mb if it is still on special for 40$ more. Best bang for the buck.
HDD: the 'cuda is a great drive. Fast, silent. Good choice.
DVD burner: bought 3 of those in the past 4 weeks - all are working great.
FDD: ditch that. Replace with flash memory.
Monitor: why stick with 4:3? LG and Samsung have great 19 inchers in 16:9 ratio, for a similar price. Heck, I bought a HP 19" 16:9 on sale last week for 239$.
Case: Antec Sonata III, with the 500W PSU, so you can ditch the Coolermaster PSU.
PSU: see above.
Speakers: buy the system that sounds the best to your ear.
OS: like all others have written, do not go to 64bit yet. It ain't worth it.
Total: ~ 1500$ (actually, with the prices that I have in mind it's 1496$).
And if you do buy 1x 2gb, you can say goodbye to Dual Channel
Can't I still do dual channel after buying another same 1x2GB ram two years later?
Monitor: why stick with 4:3?
Never been a fan of widescreen... It's just my preference :)
And about 8800s graphic card, don't I need more than 500w psu to run them steadly? Newegg.com product description says minimum required psu for 8800s is 425w... 500w seems little fragile for 8800s. Therefore if I need to by 600w+ psu, it means I need to pay more since decent 600w psu costs more than 100 bucks...
So far I've got one recommending Asus mobo and another recommending evga... Gav's reason for picking Asus was good reliability track record, perhaps 3.0charlie could give your reason as well? Thanks for the other advices, I will seriously consider Sonata III.
You still can do Dual channel with 2x 2Gb, no problem. But until you buy that second stick, you'll see a drop in performance.
Monitors, cases and speakers are subjective choices. Choose whatever suits your preference.
Antec's PSUs are all high quality. 500W maybe enough, if there are enough amps on the 12V rail. It also depends on how many components you need to power (ie. HDDs, burners, fans, etc.). Read more on the PSU subject and SKYMTL's reviews of PSUs. If you wish to have more power, then choose a case w/out a PSU and buy a 600W. Should be plenty. Last rig I built used an OCZ 600W GameXtreem for an E6320 oc'ed with 2 HDDs, 2 burners and w/c pump - no problems what-so-ever.
I have bought 3 eVga mobos (2 680i + 1 650i) lately and had no problems. All booted on the first try - all I had to do was flash the latest BIOS and that was it.
I know that Gigabyte has some great mobos too, but I don't know them.
Yup, twice 17A on the 12V rails. Like I said, it all depends on how many peripherals you have. But it should be plenty.
As for the vga card, if you don't want to upgrade in the next 4 years (an ethernity in the world of computers!), you should consider the 8800 series. It will last longer than the 8600 series; the 8600 doesn't even come close to the 8800, even the 320mb one.
Cases are personal; if you wish to buy the case and PSU seperately, it's about ~40$ for a nice case and ~110$ for the PSU (OCZ 600W). I don't know about the Asus case, nor the Nmedia PSU.