Can't find screen when installing Debian with x86 arch
I have a pentium 4 desktop and ATI Radeon 9250 video card, and I tried installing Debian (x86) on it, booting the installer, and installation went smooth, except when It tried to go to Gnome Display Manager (where you login etc), It says it can't start the X Server, and when I see the error description, It says Fatal Error, no screens found. Sorry I can't copy and paste the full error message because I can't transfer any files from my desktop since Linux isn't working( currently using my laptop).
I've tried to reconfigure XFree86 using dpkg-reconfigure xserver-xfree86, but still won't work. Is it possibly because of I choose wrong drivers? Cause on the Linux Hardware Compatibility HOWTO, Radeon 9250 should use 'radeon' driver, but I can't find it while reconfiguring x, what I found is just 'ATI' driver, and that's what i'm using. Help me please...