Dual-headed X setup?

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Author: BobGeorgeplug@bobspc.fdns.net
Date:  
Subject: Dual-headed X setup?
Can anyone give me any pointers to info on setting up X with two PCI video
adapters?

My main display goes to a large screen shared between two boxes. I'd like to
point an old PCI card towards a smaller monitor for use when the main screen
is tied up.

Thanks,

- Bob