Sorry for no replies
I actually hadn't checked back after my original post but found what I needed so thanks to all who responded.
I didn't want to play the Ebay game so I bought a card direct from Small Dog Electronics in VT. Way more than $80 so wouldn't recommend. I needed to do it though as this Mac was crucial for the kids Christmas and the games that they will be getting.
Installing it was so simple (G4 Tower), new Graphics card also went in smoothly so everything is all set for Christmas (except my Mac is only 800mzh and a bunch of games I bought require 1 Ghz or better). Oh well, I have to convince my wife we absolutely NEED a G5.
Thanks again to all who responded.