This machine will be configured to initiate an XDMCP session with a RH9 server, period. The fact that X has already started tells me that enough is working for that. So:
1. What is it complaining about?
2. How can I tell it to go ahead and install anyway?
I don't have the machine right here, but if more information about the machine is required, I can get it later today.
Thanks, Steve Bergman