M2TW beast

[Yun Dog]

Warlords,

Im looking at dumping my old inspiron and upgrading to a new desktop - primarily to DESTROY M2TW and ANILHALATE NWN2. Ras Al Gul suggested I drop a line down here for any suggestions .. thanks Ras

I have a budget of $3k AUD

Heres what I was looking at via the dell website - although I wont be getting a DELL again

Intel Core 2 vii Duo E6700 proc (E6600 is also a cheaper option)
1gig DDR ram (2 gigs might be necessary?)
20" flat LCD ultra sharp (1600x1080)
250 GIG HD

I have a choice of graphics cards
256m Radeon x1300 pro
256m Geforce 7900
1GB Gforce 7950 (+$1000)
do you think I need a 512MB card? or will the 256m cards suffice for the price?

any suggestions/options most welcome and appreciated
my main choices that im unsure about are chipset, graphics card, and a motherboard that can handle it
I dont want to just run the M2TW - I want to LIVE IT