Can't get X to start after installing new Video Card

[Dave Martini 1]

I installed a new Video Card (ASUS V9520 DVI) in my RHEL WS 3.0 machine (Dell)
and X won't start. It tried to autoconfigure the card right
after I installed it but I get this error

* ddcprobe returned bogus values:
ID:   None
Name: None
HorizSync: None
VertSync:  None

Is  there a way to configrue this card manually? At this point
I have to log in remotely because I don't get any login prompt
at the console.

I thought there was something called Xconfigurator but I did a find
and it's not on my system.

Thank You
David Martini
LLNL