Need help building new quad monitor rig

[Eihli]

I want a setup like one of these
http://pics.bbzzdd.com/users/warcrow...w-monitors.jpg [copy and paste it]

What video cards/monitor's should I go with?
Is hyperthreading important for running so many applications at once?
Can I get a good agp video card to game with or do I have to use a certain card to be able to run 4 monitors?

If someone can piece together a good build for me I'll transfer you $10 over pokerstars. Thanks.