Finding a 700V unit is going to be tough... that’s an incredibly high voltage. However, you'll easily find a power supply that runs on 110V, which is the standard here in the States.
Basically, you need a 400W PSU. I think you can grab one for about $100; there's a Corsair 460 w out there that's more than enough for your setup.
Skip that GPU. You're better off going with an NVIDIA GT 430.
That processor is only available in some small town in rural Ohio, so I doubt you'll be able to track it down. And don't bother dreaming about overclocking on that board.
A 160GB drive isn't worth the money. For $17$40, you can already pick up 250-320GB drives instead.
You should definitely be able to run Call of Duty 5 at 1024x768, though a beefier CPU—maybe an Athlon 6000+—would help.
If you can't track down an 8800GT—which, by the way, demands a high-end power supply from a brand like Corsair—just grab the HD4670. It’ll handle a monitor 19 just fine enough.