If you want to go with AMD then tweak it slightly, for $50 more you can do better (at MSY, see parts list http://www.msy.com.au/Parts/PARTS.pdf )
Get the better chip, better mobo, better card
AMD2 6400+ $185
Gbyte GA-MA790FX-DQ6 $265
Asus 8800GT 1gb $265
2gb ram $55
total $770
Id say the 1gb GT would work better than the 512mb GTS on the Large screen LCD you'll use.
If you want a bigger card ($300 more for 1gb Asus 3870 x2) you need a 850w Coolermaster realpower Pro for $240.
$$$$ adds up when you want the good graphics cards
I run a q6600, can clock to 3.85 but 3.6 is good, run watercooling and 2x ATI 2900XT in crossfire & watercooled, raid harddrives, above mentioned 850w power, 4gb ram with heatsinks, and a X38 mobo, + big mofo case lol. gaming only. oh and sau