Processor - If it were me I would stick to Intel Core 2 Duo
http://www.tigerdirect.com/applications/Category/category_slc.asp?CatId=2396

Video Card - I'm looking at the GeForce 8800 but I think i'm gonna wait until the 9800 series comes out.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2597917&amp;Sku=E145-8000

Don't cheap out! You'll be disappointed :(