AGP ATI 8500DV & SAX2

I’m fairly new to linux and I installed 11.1 and everything seems to be going good. Yast sees my video card and my monitor which is better than any other distro yet! It isn’t reliable however when 3d acc is enabled so I have unchecked that box. I have been looking around in sax2 for another reason and I clicked the options button next to my r200bb and there is an option for agpmode and agpfastwrite or something like that. I want to use agpmode but it is asking for a value “0” is in by default. Anyone know anything about this?
Thanks