Which Graphics Cards Better/ More up-to-date for Gaming n stuff?

I got a Dell Dimension 2350 and can't decide between the 2 cards - http://cgi.ebay.co.uk/NEW-nVIDIA-GeForce-6200-256-MB-PCI-3D-Video-Card-VGA-/280641647965?pt=PCC_Video_TV_Cards&hash=item41578bb55d or http://cgi.ebay.co.uk/nVIDIA-GeForce-FX-5500-FX5500-256-MB-PCI-3D-Video-Card-/280640667847?pt=PCC_Video_TV_Cards&hash=item41577cc0c7 I know thi s comp's outta date i jus want advice on which card outta the 2 plz.. cheers