SUSE :: 11.3 KDE - New Build Installation

I've just upgraded from
Asus M2N32-Sli Mobo
Athlon 4200+
3GB RAM
Nvidia discreet graphics
Creative sound
to
Asus M4A88TD-V Evo Mobo
Athlon 640 X4
4GB RAM
ATI Built it graphics
Built in sound

I'm using SUSE 11.3 KDE4 installing from Live CD. I managed to boot into my existing linux install using failsafe and from there I figured the drivers would need sorting out. I managed to get the sound sort of working and then I installed the latest kernel and the ati rather than nvidia drivers. Now it wont boot a GUI at all, but Windows works fine. I have 3 kernels installed (old PAE, new PAE, Old default) one will boot into a console where I can access yast and tried to remove the ATI driver but it didnt make it work again. Startx hangs the system unless logged in as root, when it throws and error saying see xorg.org or some similar x website. Nothing on the install partition is important, all data is on the same HDD but on different partitions which I need to keep but can access from windows if I need to right now. I tried to reinstall from the Live KDE CD but it hangs, have tried to use the defaults, VESA graphics, text mode, No ACPI, PNPBIOS=off but still won't boot live CD or install. Cannot even get the "media test" to work, altho memtest runs fine.