You first need to tell xdm (or kdm or gdm) to allow XDMCP connections. There are some security considerations in allowing anyone to connect, so you may just want to add just your Windows host to the list. The config file for this is in /etc/X11/xdm/Xaccess (or /kdm/ or /gdm/). Once you've made the change, restart xdm.
On your Win box, run the Exceed Xconfig program. Selet "Communication". The mode should be set to XDMCP-query. Select "Configure..." and set the "Connect Host" to your Linux box. That should be it. Run Exceed and you should get your xdm login box. rgds-- TA ([EMAIL PROTECTED]) I don't speak for the Federal Reserve Board, it doesn't speak for me.