I used GRUB, though did it kind of backwards.

I installed XP first, then Ubuntu. Then my XP crashed and I had to reinstall XP, but then I could only boot to XP. I used SuperGrub to recover my Linux partition, and had to add XP to my GRUB list. All was good.

When I decided to install Leopard, I used GParted to make space on my drive, and installed Zeph's 10.5.2, but now could only boot Leopard. Again, I used SuperGrub to get back to Linux, then added Leopard to the list. Ubuntu, XP, Leopard; all from GRUB.

Since then, I have added a dedicated drive for Leopard, added it to GRUB, and all is good.

I have been so happy with my OSx86 PC, I gave my G5 to my wife.

Rick