Okay, I've decided to install Windows Vista, Mac OSX Leopard, and on top of them, Sabayon Linux with GRUB Bootloader. If GRUB fails to add Mac OSX to its boot list, can I add the following below to the grub.conf file to make Mac OSX bootable?

Below is the script-

title Mac OSX Leopard
root (hd0,1)
chainloader +1

Change root(hd0,1) with your OSX86 partition!

Please let me know. Thank you to all! I am also planning to stick with a MBR Partition Table and install Sabayon in one whole partition. I am installing these three O/S's on a single hard drive.