Further to the previous post about Pivot and Stykz, I found it annoying not to be able to load a background. After much searching I found a program called "Crossover Mac" by Codeweavers, which runs Windows programs in, well - a window. It supports a ton of different programs and Pivot is one of them. There's a 30-day trial available, which was easy to install and user-friendly for adding Pivot. I've only tried it once so far, but it worked reasonably well. It was a bit slow when I had 3 figures in there, so I'll have to play a bit more.
Crossover Mac costs $39.95 USD if you want to keep it, so worth checking out anyway.
Links:
Codeweavers' Crossover Mac 30-day trial download page
