Radeon Driver question

[Max]

Is there some sort of configuration that needs to be done with the 
Radeon Driver to get resolutions higher than 1280 x 1024 ? My system 
looks like crap at that resolution but its seems to be the best I can get.

The above is the only question that I have, the below rounds out why I 
am asking and the other options I had considered or explored.

The card I am using is a Radeon 6570 which I know is capable of better 
resolution than what I am getting.

  I am not sure what happened as I have been out of touch with this for 
sometime. I have been using an Nvidia card in the last few years and 
that did the trick.

When it decided to fail I decided to go back to an ATI card, since they 
have an open source driver.

Aticonfig doesn't appear to work for the radeon driver. I saw the 
radeontool but that didn't appear to help either but frankly I am not 
sure how to use it. There is no manual page for it apparently and I am 
not sure which registers to set nor what to set them too.

I tried the AMD/ATI proprietary driver but it fails to build the kernel 
module then asks for a reboot. Reboot and presto all there is, is an 
error message. I had to uninstall it to get back to runlevel 5.  In any 
case I also gather that kmod-radeon or catalyst is no longer available. 
Its a shame but what can you do.

  So I am back to my original question: Is there some sort of 
configuration that needs to be done with the Radeon Driver to get 
resolutions higher than 1280 x 1024 ?

Thanks,

Max