Dont build a machine around an old card like that, work out your budget and people will post thier opinions as to which hardware would be best.
Desktop cases are difficult to keep cool, so maybe a tower would be a better idea.
Well I answered your question, well ..... sort of
Intel Core2Duo 6400 @ 3.4Ghz
4GB Geil 6400 Ultra
3 x 500 Gb Samsung HD
EVGA 8800 Ultra OC