Tonight I thought I'd upgrade the screen card in this mac with a more powerful ATI Rage Theater card I got out of a Quicksilver. The card has both vga and dvi connections. When I boot it with the dvi connection the screens shows the apple logo and then turns black until I press the power button on the mac again. Next odd thing is when I click the about this mac it shows it as a Power Mac G3, which this definitely is not. Is this a software problem, so far it seems to work fine except for the having to press the power twice to use my Cinema Display.