gavin i'm sure you know how to use a virtual machine to run older versions of osx right?
I'm sure I could figure it out, but I don't have a copy of osx 10.5 to run, won't pirate it, and don't feel like spending $60 to pick up a copy on Ebay. I'd rather not spend the half a day it would take me to set up a development environment in a VM, too....