I am happy to report that I have finally got my latitude set up to triple boot win 7 pro, snow leopard, and ubuntu 10.04!
It was a long road to make it happen. I started with windows 7, then loaded the ubuntu flash install media and repartitioned the drive, then installed ubuntu to its own partition, remembering to install grub to the partition and not to the mbr.
I had to install snow leopard to an external hdd using the netbookcd method, then updating it, set up the latest graphics kext fix, set up a sleep corner in expose, then cp it to the partition in linux. Installed chameleon and fixed the windows partition, and voila, its all good.
I never thought Id get it all working. I cant believe how well it all works together.