The previous poster has me a bit confused. Are you talking about the actual RAM in the computer or are you talking about the video card? Yes, the actual RAM in the computer needs to be, at least, 512MB(and I would suggest 1GB). The video card for the 7700 comes standard with a 256MB that cannot be upgraded yet.
Have you already got your computer? If not, just call them and ask them to increase the RAM. If you already have the computer, then you need to talk to the AW people about upgrading the RAM. Would it void the warranty to upgrade the RAM with a product not approved by AW? I would just call and talk to them about what you can do with the computer so you don't accidentally void your warranty or anything.