Will I have a problem?

My Specs
Mobo: Asus P5N32-SLi Deluxe
CPU: Pentium 4 640 3.2 GHz
GPU: eVGA 7800GT CO SE 256MB
RAM: 2GB (2 x 1GB) GSkill 667MHz DDR2

Will I have a problem with running this game at High with AA maxed?

From the videos I've seen it looks to have pretty good graphics.

It might be a stupid question but I'm on a P2 400MHz right now. heheh. Had to RMA Mobo so I haven't even got to play on it yet.

It'll run just dandy with everything maxed out and room to spare on that rig. You may want to try running AA and Aniso at full settings from the 7800's control panel instead of via the game.

I think it will run fine, I currently run it on:
Mobo: K7S5A EliteGroups
CPU: AMD AthlonXP 2400+ (1.9ghz)
GPU: Nvidia Geforce4 MX440 (64mb) *Don't laugh.... lol*
RAM: 1GB DDR (2 x 512mb) @ 2700

don't think it will run on the 400MHz, as my server computer with 800MHz w/ on mainboard video has a hard time running it.

Heheh. Not gonna run it on the 400MHz... I just haven't even had experience with my new computer so I don't know what to expect.