In a word, don't. I upgraded my laser's Mac from 10.5.5 (worked fine since VMware Fusion 2 came out) to 10.5.6, and starting any of the FB3 software caused the MacOS kernel to panic somewhere in USB. This time it doesn't seem to be Pangolin's fault, either- VMware users are reporting problems all over USB.
Anyway, I got to spend an evening rolling back my Mac to 10.5.5, which was a more painful process than I really wanted it to be, so I wanted to save anyone else from experiencing the wonders of what must surely be Apple's least popular update yet.
-J.