According to foxconn:
AGP slot supports 8X / 4X modes
Here's a link to the graphics cards that they list as supported
http://www.foxconnchannel.com/Upload...raphicCard.htm
Make sure you have the latest, or suggested BIOS vesion for the graphics cards.

There are some new-ish AGP cards from ATI that might also work with this board, but you need to have a powerfull enough PSU (power supply) for the graphics card, "follow the graphics card MFG's recommended/certified PSU, then try to match the graphics card to your CPU.. Newer cards need a faster CPU to feed them.. Going by your CPU specs, an ati x800 or higher end x1800 x1900 x2600 or x2900 series would be CPU limmited, but would still play nicely. If you'd rather have an Nvidia card, a 6800 to 7900 would also do well, but will still be CPU limmited. Since AGP is nearly phased out of the market by PCI-E and with only a couple "NEW" AGP cards available from ATI, you might have some trouble finding the older cards via RETAIL. There are still loads of AGP cards for sale, for instance, current listings on ebay.co.uk show some Geforce 6800gt's at reasonable prices.