X WINDOWS

Install
yum groupinstall "X Window System"

Configure
chkconfig xfs on
service xfs start

system-config-display

test config creation
Xorg -probeonly

create config file in console
Xorg -configure

Run remote X apps
ssh -X user@server

Desktop Managers
yum install switchdesk

Troubleshooting

Logs
/var/log/Xorg.0.log
~.xsession-errors
/var/log/messages

Display not set
export DISPLAY=localhost:0.0
or
export DISPLAY=:0.0

xfs not running - check /tmp or /home to see if they are full

corrupt XFS sconfig - reintall xfs rpm?
rpm -ivh --force xorg*xfs*