Nice set of how-to

this link: http://osx86.wikidot.com/how-to-s

have several how-to posts, try it if you need one of them it includes:

How to: Load Kext
How to: Enable Root Access
How to: Use Bootloader Flags
How to: Inject Kexts into Leopard DVD
How to: Use online updates
How to: Fix the GUID bootloader (Blinking cursor)
How to: Create and Install GFX Strings for EFI
How to: Install Leopard on a software RAID(without an existing installation)
How to: Find device id with Windows
How to: Find device id with Mac OS / Linux
How to: Disable SPOTLIGHT
How to: Install and use GIMP without X11
How to: Changing "About this Mac" info

Enjoy.