Its looking like your MOBO has the AGP slot but I am not 100% sure you will need to check before perchasing a graphics card, as AGP cards will only fit in the AGP slot and PCI-E cards will only fit PCI-E slots.
I am also not sure just how much better the AGP 7600GS AGP cards are like comarded to the integrated graphics you currently have, so am not sure how good value fpor money wise your gonna come away from doing this upgrade.
I dont know much about AGP cards as they are from before I started learning about computers and keeping upto date with hardware. But if nobody else hear can give you advise then try asking on
http://forum.pcstats.com
Which is another forum I use and have learnt most of what I know about hardware from.
Hope that helps ya matey.
