Hi Heath
If you get Parallells for mac you can install a copy of Windows that will run on one of your desktop spaces and you can run Virtual Dub for splitting AVI's into bitmaps to be stacked with Registax both programs are free. I have used MAC's at tafe but as yet I am still slumming it with Windows

. But with Parallels you can install windows and have it running in a window or as I said above on one of your desktop spaces. That would be how I would go or there are some dedicated MAC users on IIS that may have some software that you can use direct on MAC. What version of MAC are you running