[glider16]

So this is my first time building a comp, I've basically just been browsing newegg looking at pricing and reviews of items. This is just a build that came from that, and I was wondering what changes you guys would make, things that aren't worth the money, things that I should spend more on, if it's all compatible, etc. etc.

Case: (Looking for tall, w/ multiple fans) Looking at
$169 Thermaltake Armor Series VA8003BWS Black Full Tower Case
http://www.newegg.co...N82E16811133021
and
$129 Antec Performance One P180 Silver cold rolled steel ATX Mid Tower Computer Case (Or 182, but I didn't see any difference?)
http://www.newegg.co...N82E16811129154

PSU: $124.99 OCZ GameXStream OCZ700GXSSLI 700W ATX12V Power Supply 100 - 240 V
http://www.newegg.co...N82E16817341002

CPU: $274.99 Intel Core 2 Quad Q9300 Yorkfield 2.5GHz 6MB L2 Cache LGA 775 95W
http://www.newegg.co...N82E16819115043

Motherboard: Not too sure on what I should get in this department, I would probably only need one that was 2-way sli capable, because I really don't see myself getting 3 9800's ever.
Very up in the air so please feel free to recommend better, but have looked at:

$199 EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX
http://www.newegg.co...N82E16813188013

$199 GIGABYTE GA-EX38-DS4 LGA 775 Intel X38 ATX
http://www.newegg.co...N82E16813128089

$149 ASUS P5N-D LGA 775 NVIDIA nForce 750i SLI ATX
http://www.newegg.co...N82E16813131232


Ram:Thinking 4 gigs, easy find once I get the mobo.
$86 CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory
http://www.newegg.co...IN2X4096-6400C5

Graphics Card: $209.99 MSI NX8800GTS 512M OC GeForce 8800GTS (G92) 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card http://www.newegg.co...N82E16814127325

Fan/Heatsink: $49.99 ZALMAN CNPS9500 AT 2 Ball CPU Cooling Fan/Heatsink Don't know too much about fans, so any help would be good. Also would a heatsink or fan type be recommended?
http://www.newegg.co...N82E16835118003
or
http://www.newegg.co.....tek+HDT-S1283

DVD Drive: Want to keep it SATA but doubt I'll be doing much burning $34.99 ASUS Black 20X DVD+R 8X DVD+RW 8X DVD+R DL 20X DVD-R 6X DVD-RW 14X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 20X DVD±R DVD Burner with LightScribe
http://www.newegg.co...N82E16827135156


Hard Drive: $79.99 Seagate Barracuda 7200.10 (Perpendicular Recording) ST3500630AS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive Nothing special
http://www.newegg.co...N82E16822152052

Also, two things I was wondering about were, would I need to purchase thermal (if I need it) or would it come with the processor? Also, what are the differences between 64-bit vista and 32? I know you can make use of 4+ gb of ram with 64-bit, but what is the downside? Is it more of a resource hog? Or is it just better?

Help is much appreciated