Well... I have a top of the line AGP card wich is a GeForce 6800GT. It runs EQ pretty well. I run it with 1gb of ram with no real hiccups. Radeon 9600 is crap, hands down. Used to have one. If you get one for free try it. Do not spend cash on that old piece of crap, unless you get it for the price of a 6-pack of beer.
Problem is that 6800 family is old as hell. But if you can get a used one for a fair price I would go for it. Otherwise I would upgrade my entire setup to a new rig to the latest gen.
AMD dual cores are dirt cheap now and with a low to mid range current gen card you will be ok to run EQ plus have opportunities to upgrade.