~1000.00 Gaming Build

First time builder needs some help with a spec.

Don't think I'm going to OC, don't think I'm going to SLI either.
Going to keep it running XP-32bit.
Really just need it to run the Adobe Photoshop, Illustrator and InDesign. Will need it to game when SC2 comes out. Of course, no one knows how demanding it will be, so future expansion is always in the back of my head.

Please let me know if I'm overkilling any of my components.

Open to all suggestions. Thanks in advance.

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CPU > Core 2 Duo E8400 > $214.99
Because everyone says Quad's aren't being taken advantage of yet.

MOBO > Asus P5N-D > $160.92
I've heard SLI'ing on this board isn't the greatest idea. I was reading that there isn't enough space to run two cards with proper air flow. Can someone clarify this for me?

RAM > Corsair XMS2 DHX 2048MB Dual Channel $71.99
If I'm going to stay at 32-bit, I think this will be fine. Could be wrong though.

GPU > BFG GeForce 8800GT $199.99
Because everyone seems to hype this GPU.

HD > Seagate Barracuda 7200.11 32MB Cache $90.99
Because everyone seems to hype this HD.

CASE > Antec Nine Hundred > $101.99
I'm particularly interested in getting a case that'll allow for lots of air flow.

PSU > OCZ GameXStream 700w $125.99
Not sure if this is overkill for a single GPU. If I do SLI down the road, will this be enough?

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Again, thanks in advance. Any comments and suggestions will be greatly appreciated.

*Flame Shield ON*