[CentOS] system-config-display problem

Had centos 4.1 set up and running with X.  Had to replace the monitor to an
Acer LCD monitor (model AL1714).  When I try to reconfigure X,
"system-config-display" seems ok going through the first stage of detecting
the graphics card but then returns a floating "Input not supported" message
to the screen and nothing happens afterward.  Any hints on solving this
issue will be greatly appreciated.

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Benoit Casault				Bedford Institute of Oceanography
Tel:(902) 426-3843			Biological Oceanography Section
Fax:(902) 426-9388			1 Challenger Drive
e-mail: casaultb at mar.dfo-mpo.gc.ca	Dartmouth, N.S. B2Y 4A2, Canada
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