Radeon S9250 in a sawtooth

A year or so ago, when my sister had her dell, I got her a nice video card for all of her picture/video work. I got her an ATi Radeon S9250 w/ 256mb DDR. It was on sale at tigerdirect.com for $60, and she needed a better video card bad, so I got it. Well, it helped out in the dell a ton, made everything easier. Well, she got a sawtooth 450MHz about a month ago, and that has made things even better. The dell has gone unused all this time, and just recently, while pulling a drive from it, I saw the card.

I though "Hey, wouldn't it be great to have this in the G4?" I pulled the card out as well, and popped it into the G4 (while still having the moitor connected to the radeon128pro) It comes up in the apple system profiler as a "VGA-Compatible Controller" and it knows its made by ATi. But I get no picture from it when I connect to it and boot. Well, this wasn't a huge supprise to me, but is there any way to get it to work? Can I flash it to work on the mac? Or could I get some drivers or something?

Its a sawtooth G4 450MHz, 768mb RAM, OS 10.3.9

More info on the card from tigerdirect - http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1524186&CatId=1603

Thanks a ton!

John