Just installed a radeon 8500 into my MAC AGP 350 sawtooth machine. Am using 10.2.4 with 512 ram. What a nightmare. Finally was able to get the monitor working after removing all of the ATI extensions in the folder system-library-entension. Now I am at a loss to understand why this happening and what I can do to get the card operating properly. The monitor is a single Apple 17" that came with the G4. Any ideas? TX Ron