What an idiot. NOW i see that you want a REAL machine, not a toy.
This is the configuration page for Apple machines:
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/6354001/wo/92TU3pJ79mLK2anZSaWUtKIV9...
Pretend to be student and get a discount.
Here's my suggestion:
2x2.66 - can't really appreciate the extra chip speed unless constantly rendering.
2 RAM slots have RAM - 6 slots left - start with four x 1Gb chips = total of 4.5 Gb with room to move, later. Get your RAM at Crucial.com. Installation easy if you are not an idiot. Fan blows full and little red lite comes on if RAM install error. How do i know this?
No comment on hard drive capacity altho aftermarket buys - Provantage for example - have way better prices. Want to consider how Applecare works for the overall machine if you elect to get it and NOT get Aplle hard drives.
$249 a fairly safe gamble when combined with a display purchase made at the same time...
Grafix: The basic card is 256 and can drive a 30" display and a smaller one. This is enough for now.
Get the second optical drive for when the first one craps out. And it will. For $99, who needs to be hauling the machine out?
I would encourage you to go for the wireless keyboard so i can ask you if it is any good.
Dwight Atkinson