Like he said, Penryn isn't anything special... Just cause the current quads aren't 'true' quads doesn't mean they suck and 'true' quads will own them.
And you do get what you pay for.. E2180's may be a good value but they are NOT for builds with a GTX... the 1mb cache will hold you back in...
As said single rails are considered better but usually it won't make a difference. And yes its a good power supply but its nearly $20 cheaper on ZZF (after shipping)
CORSAIR VX550W 550W Power Supply CMPSU-550VX Power Supply Retail at ZipZoomfly
I would not use tables.. especially since you haven't learned them yet. DIVs do not create the kind of 'seamless' design you like with the iframes but they are a whole lot simpler then tables and make your code amazingly clean and easy to change your content.
And as said, iframes are mucho bad.
Do not get the E6850. The quad will be way better for upcoming games and right now even a stock Q6600 is more then enough for any game that is not multi-threaded. Once games are multithreaded, the quad will pretty much have twice as much power
There are two versions of the 2900pro, 512 and 1gb...