I recently purchased an ADC to DVI adapter for my G4. I'm connecting a 20'' Gateway Monitor. First everything was okay. But the icons on the desktop were stretching a little. So I changed the resolution and the monitor went into a sleep mode. I restarted the computer, and the Apple logo appears but the monitor falls back into sleep mode. WTF??? I disconnected, reconnected, tried about everything. I connected the monitor to my Dell and it works fine. Any suggestions? Thanks.