I don't think you'd get the full performance out of those cards with that processor, but you might want to get the high-end video card anyways, in case you upgrade later on then you can use it in your new system. If not, you might want to get something like a GeForce 2 GTS or something of that class of video cards.
AMD T-bird 1GHz @ 1050
Soltek SL-75KAV-X (KT133A)
128MB PC100 @ 140mhz CAS2
GF2 MX400 64MB TV Out
Linksys 10/100 NIC
IBM 60GXP 40GB 7200rpm
Turbo Gamer 21" Black Aluminum Case w/ 350watt Enermax Power Supply.
AMD Athlon XP 2500+ 1.83GHz @ 2.09GHz 1.65v (167*12.5)
ATi Radeon 8500LE 128MB DDR
Gigabyte GA-7VAXP KT400 w/sound+LAN+Firewire+RAID
2 x Samsung DDR SDRAM 256MB PC2700
Seagate Barracuda IV 80GB 7200rpm ATA-100
LiteOn Black CDWriter 42x24x42
LiteOn Black DVD-rom 16x
Panasonic Black 1.44MB 3.5"
Windows XP Professional
Creative Inspire 5200 5.1 Black Speakers
80mm LED Case Fans x 5