Ok ill write a tutor (redhat only i dunno if it works with more os.)
1) dload and install
-go on
nvidia and dload the linux ia 32 driver if you have a nvidia card.
-press ctrl alt and f1
-log in with your root there
-browse to your driver file and open it
-type init 5 to come back to normal redhat.
you should have a new kernel (do redhat update for it).
2) configure x
-go to /etc/X11/XF86Config
-replace Driver "nv" or Driver "vesa" with Driver "nvidia"
-make sure that Load "glx" is written down in the module section
-delete Load "dri" and Load "GLcore"
-save it and restart your linux or x(i would do it iam not sure if necasarry)
now try graal it will work very well
can someone please ad stuff for other cards do?
not everyone has a nvidia card (if your german and want one i have a spare geforce 2 mx 440 =P you only need to pay the packet)
please stick this post =D