hi there,
sorry for all the trial that you have

but dont worry, apple start to like amd too

so just wait for that.....
anyway..back to your problem ..

:
is there any distro/installation dvd that you manage too boot at all and get the installation process run?
FYI : when you boot any of them,if default dont work, you should try the kernel that match your system. i.e Ideneb 1.6 Lite, 10.5.8, it has some choices of anv kernel, mach_970, mach_toh kernel, which you can load and see if it works. At boot prompt type:
mach_970 -x32 cpus=1.
And if you can get installer screen, click
customize before you click
install.
From some experiences, ideneb 10.5.5, was very easy to boot on amd, just need the
-x32 flag
or have you read about installing retail SL with an EmpireEFI4AMD (it is a boot cd img to load the retail SL dvd customize for AMD pc -->google)
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