ATI Radeon 7000 and 7200 no screens found

[sacui]

Hello.

I have an ATI Radeon 7000 PCI and a ATI Radeon 7200 AGP card, where the AGP one is the main device. When I run xorgcfg it doesn't freeze but it shuts down and I cant see anything except some green boxes here and there. All I can do is to reboot. But I know all the configuration for all my drives and monitors, and I set up my xorgconfig just like I had it with other linuxes but it doesn't work here because it tells me no screens found. These configuration settings in Xorg.conf work for example in slackware. But if I erase the xorg.conf file and I start startx it works in very low resolution and frequency which I cannot change. What could be wrong?
How do I load up the agp drivers since I think that could be the problem. Thank you.

Lenard