I had 10.5.2 Kalyway on my desktop with little to no issues IIRC, in fact, it was pretty much put the disc in and boot up, do the install, reboot and you are there. No mucking about. Then again, I had a PCI-E 2.0 Geforce 8400 GS 512MB, which was like supported from the beginning. I doubt the onboard nForce 430 would work (6100 shared vram).

I am trying an experiment on my gateway laptop that was supposedly not supposed to be able to even BOOT it.

I turned off legacy USB support, turned off the CPU Power states (totally off), turned off PXE boot, and booted from the internal DVD-+RW and right now, it's doing the installer. Let's see if i can get the internal Radeon X600 mobile graphics going. Someone on a Dell forum said they got their X600 going with a patch, but we shall see...