core 2 quad q6600 (i dunno why, but they are only $300 )
4gb ddr 2/3 ram..i got 1066mhz
any good asus deluxe mb, i got the p5k deluxe
any nvidia 8800 series
a good samsung/segate sata II hdd, with perpendicular write
and a good case
and a good SATA dvdrw drive
this will set u back a grand and a half or so...but i think it will be worth it.