Hello,
Your mainboard use an amd cpu.
I never installed Leopard on an amd so i canīt tell you the best kernel for it but what i know the voodoo kernel should work with amd cpus.
I would choose for amd the legacy_kernel for snow leopard.
If i where you i would install snow leopard and if you wanīt to use a distro i would choose hazards snow leopard for an amd but the best thing would be if you install it from a retail version.
Here is a link for nawcoms mod cd that you will need if you wanīt to install a retail version.
http://blog.nawcom.com/?p=569
If you have any questions just post them here and i will try to help you.
A list of your hardware would be good to help you.
It would be also interessting which kernel flags you used?
We need more information so that anyone can help you.
Greetz