I too managed to triple boot XP Pro, linux and OSX x86 (on my Dell 9300).
The VMWare solution works but in my opinion, isn't ideal.
Here's how I did it briefly :
Installed XP Pro from scratch, using 1/2 of my 60gb drive. Copied the deadmoo tiger image there.
Installed SuSE Pro 9.3 using 15 gigs of the remaining space (1 partition for root, one for swap).
Used FDISK to create a fourth primary partition of type "af".
Used dd to copy the image from my C: "xp" drive to the fourth partition:
"dd if=your_tiger_image.img of=/dev/hda2 ibs=512 obs=1M skip=63"
Modified grub and reboot. Viola. Triple booting!
Haven't managed to get the wireless working on my 9300 or my USB mouse... and would like to use bigger screen size than 1024x768, but I haven't had a lot of time to fool around with it. Mac OSX boots FAST - dramatically faster than XP.
bubbleguuum's tips in http://www.360hacker.net/forums/view...r=asc&start=15
really helped me do this.