You can buy HD15 (VGA) to RGB (BNC) adapter cables to fit any video card. The adapter cables look like <A HREF="http://www.cablewholesale.com/specs/10h1-17101.htm" target="_new">this</A>.
However, some RGB monitors are fixed frequency, meaning not multiscan.
The adapter cable wouldn't do you much good if you have fixed frequency monitor.
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