According to Apple imacs are supported, probably just not the rev As, so all this talk about pro app and consumer machine is hogwash.
One of the following Macintosh computers:
* Power Mac G5 with a 1.8 gigahertz (GHz) or faster PowerPC G5 processor
* 15- or 17-inch PowerBook G4 with a 1.25 GHz or faster PowerPC G4 processor
* 17- or 20-inch iMac G5 with a 1.8 GHz or faster PowerPC G5 processor
* Not supported on Intel-based Mac computers with Rosetta; a Universal version to be available before the end of March 2006
# Mac OS X version 10.4.3 Tiger or later
# 1GB of RAM
# One of the following graphics cards:
* ATI Radeon x600 Pro or x600 XT
* ATI Radeon X800 XT Mac Edition
* ATI Radeon X850 XT
* ATI Radeon 9800 XT or 9800 Pro
* ATI Radeon 9700 Pro
* ATI Radeon 9600, 9600 XT, 9600 Pro, or 9650
* ATI Mobility Radeon 9700 or 9600
* NVIDIA GeForce 6600 LE or 6600
* NVIDIA GeForce 6800 Ultra DDL or 6800 GT DDL
* NVIDIA GeForce 7800 GT
* NVIDIA Quadro FX 4500
# 5GB of disk space for application, templates, and tutorial
# DVD drive for installati