You're right about my setup right now, and thanks for the advice. I'll purchase that connector. But it's a bit more complicated.
The primary monitor has dual VGA/DVI ports. I'd like to use the DVI option on that one, and the VGA connection on my other monitor to the ADC port. When I connect the primary monitor to the G5 via the DVI cable, I get a no signal message. When I try to switch from the VGA to DVI connection on the on screen (monitor) menu, the screen flickers, goes black, restarts, and is in the VGA mode once again. It's pretty odd.
If it matters, it's a Planar PE191M
It's gets a bit confusing. Ask for any clarifications.
Thanks.