still got problem with ATI

I still have problem with ATI X.org driver even though I think I have a ATI video card After add the package I reboot it and the video got corrupted and the system seem to be hanged I did it two times and still the same I have to re-install two times the Xfix during the boot menu does not seem to work even though later I realised I can boot up from CDROM and surf the Internet for solution I found one and did not have chance to try it dpkg-reconfigure xserver-xorg