Ximian/RedCarpet/SuSE 7.2 Question

[T.J. Arrowsmith]

I'm trying to run red carpet on a SuSe7.2 box.  In order to be able to
install, you need to run as root.  There's a bug in red carpet that prevents
a user from running red carpet as root from the menus on a SuSE 7.2 box.
The workaround is to open a terminal window, su, then run red carpet from
the command line.  I tried that and got the following error message:

Xlib: Connectioin to ":0.0" refused by server
Xlib: client is not authorized to connect to server

Gtk-WARNING **: cannot open display: :0

Has anyone else seen this problem?  If so, can you let me know how to fix
it?

Thanks.

T.J.