Hi!
The ATI 9000/9100/9200 should work just fine becasue they work with AGP2 (3.3V) which I think that your board has.
"The AGP slot on the K7M is a standard 3.3v AGP 2X slot"
This can be found at the following link:
http://www.anandtech.com/showdoc.html?i=1153
By the way, you should see a huge preformance boost with these cards compared to your previous card. But be aware of the so called 9200se.
On the other hand you can also use the FX 5200 series since they also are AGP 2 to 8 compliant.
On nice thing with the 5200 are that there are many models with passive heatsinks. Nice to the ear, that is.
When it comes to preformance I think that the 5200 are slightly faster than the 9200.
So in the end its a question of which you can find at the lowest price.
GL
Turk