Only method that worked for me on an HP Compaq 6510b:

Wipe out HDD with built-in Disk Sanitizer. 0.1% does it.
Set to boot from HDD with DVD second.
Put Kalyway 10.5.2 iso in DVD drive & boot.
Customize with vanilla kernel, GMAX3100 if you've got one.
Install
LEAVE DVD IN DRIVE on re-boot.

Works 80% - Fully functional Leopard 10.5.2 desktop comes up; USB, Bluetooth & card reader OK. PCMCIA slot, WiFi, sound and NIC are dead.

I'm a total nubi, still trying to get 10.5.2 to upgrade to Snow Leo.

Saw that you got the same response to request for help I got - zero. These suggestions may be totally worthless on your machine.

Good luck.