Changing graphics cards

One of my machines uses SIS 761 Mirage onboard graphics. Unfortunately, like most distros, Suse 11 can’t cope properly, producing vertical artifacts at about 1" intervals.

To accomodate this, I installed another graphics card which resolved that problem but created another - although disabled in bios, the SIS chip continued to generate heat, with the result that the whole system overheated and collapsed!

So I removed it but Suse can’t cope with the change (but Mint could).

Is there any way of getting Suse 11 to adapt to this change without re-installing?

Furthermore, is it possible to utilise the definitions from another distro (Mandriva or PCLinuxOS) where SIS is handled correctly?