If you are having problems getting osx86 to boot (flashing cursor then please follow these instructions)
Worked fine for me
1) Boot into the Installer DVD
2) Go to Utilities in the Menu Bar (thats the one at the top)
3) Click on Terminal
4) Type ‘/usr/misc/script.sh VOLNAME’ where VOLNAME is what you named the partition that leopard resides on to during the formatting of the disk. Ex. LEOPARD, OSX, or MAC
5) Type ‘reboot’
6) Cross you fingers and hope boots
7) If it doesn’t look around for some hardware incompatibility
Hope this helped some people and this MUST BE DONE if using ToH DVD to format drive