UPDATE******

Today I set the Catalyst to boot at start up and go to full screen. Shut down, hooked it up to everything, rebooted, and all is great. Ran thru the entire 1 1/2 hour set. Rock solid. Thanks for all the help everyone. Here is my current set up on this Mini Rack...

Mac Mini Server (running Snow Leopard Server)
Catalyst 257
Out of mini port to mini to VGA adapter, from there, VGA in to Imagepro
Running 1024 by 768 60hz (this is what the video guys wanted so thats what I gave them)

Thanks again everyone. Matt