Morphing software!

[RaeTracer]

Hey all!

Got kind of a weird technical problem here at work, and I'm hoping you can help me out.

I'm doing a few animations that represent the history of the earth in various ways, and for one of them, I need fairly realistic continental drift. I have a cd of maps of the earth, but I need a way to transition between them. I'm hoping to make a movie of animating continents that i can then apply as a texture to a sphere in Maya.

So my thought is to download some morphing software, and use that to animate between the maps. But i'm having a hard time finding something i can use, especially for Mac. (I have a PC at home I can work on, too, but generally we use Macs). Does anyone have any experience with this?

Here's one of the maps, just so you can get an idea what i'm trying to do. I may have to repaint it a little, just for more realism.