So my gaming computer died.

It's been a trooper, but it's aging a bit -- the GeForce 8800 GTX and processor are starting to show their age.  A day ago it locked up, then whenever I'd try to reboot, it would either not even POST/beep or would get to the initial motherboard logo screen and hang.  I've removed and/or individually checked all parts except the processor and motherboard, so it's a critical component that's died.  I've started looking into the cost and availability of parts to essentially build a new gaming rig, and would appreciate any advice from other PC builders out there.  Parts that would be transferred from my old machine include:

• Antec Nine Hundred Two Black Steel ATX Mid Tower Computer Case
• Creative Sound Blaster X-Fi XtremeGamer Fatal1ty
• Western Digital 80GB 7200RPM SATA, Model WD800JD (OS Drive)
• Seagate 500 GB Barracuda 7200.9 SATA (Storage Drive)
• Plextor 16X Dual Layer DVD+/-RW SATA Drive

 
New parts would be added include:

• Intel Core i7 940 Nehalem 2.93GHz LGA 1366 130W Quad-Core Processor
  I figured to go with the new Intel i7 processor rather than an arguably cheaper C2D because I don't use it exclusively for gaming, and whenever I do any processing intensive tasks (video rendering, high res photo work, etc) I typically use this machine, so the quad core will get work, and the i7's performance #s in games are on par with or exceed the C2D (but with a price premium).
   
• ASUS P6T Deluxe LGA 1366 Intel X58 Motherboard
   
• Corsair Dominator 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Memory
  6GB of RAM because I'm thinking I'll get me some Vista 64-bit on.  It seems to be stable enough now according to the things I've read, and most of the review sites seem to like the added RAM capacity over any lingering hangups with Vista.
   
• EVGA GeForce GTX 285 SSC Edition 1GB GDDR3 Video Card
  Unlike Giller, I've always been a bit of an nVidia man after getting burned by ATi sometime back (same situation but in reverse).  The new 285 refresh is only rivaled by ATI's dual GPU solutions which still run a good $50 more.
   
• Western Digital VelociRaptor WD3000GLFS 300GB 10000 RPM SATA 3.0Gb/s Hard Drive (Gaming Drive)
   
• SILVERSTONE ST70F 700W Modular Power Supply
   
• Vigor Monsoon III LT Dual 120mm Fan CPU Cooler

 
Thoughts?  I'm not really dead set on any part, but you can see some of my reasons for picking the more tricky ones above.

I would have to suggest the DX58SO from Inetl for a motherboard and get a GTX 290 instead of the 285. I might be mistaken, but the stream processor count and VRAM are drastically increased for the 290. Also, like Giller said, you might want to upgrade the power supply more.