X forwarding an ssh connection with sudo

[mvalites at banta-im.com (Matthew C Valites)]

I'm trying to sudo a command that runs an X app through an ssh 
connection between a linux machine and a solaris box.  The problem I'm 
having is that the X forwarding doesn't allow a window to be thrown back 
when you're changing uid's.  I believe that when I use sudo (or su) it 
loses control of the pipe that would normally have the app sent back 
through.  

X forwarding is configured in my sshd_config and works perfectly for any 
app that I would run normally logged in as either root or any other 
user.  The problem exists only when I try to remotley run a program as a 
user other than what I logged into the machine as.

I think that the problem lies in xauth and the DISPLAY env variable. 
 Somehow I need to set DISPLAY in sudo as is it is when I first logged 
in.  Has anybody had any similar problems and have any workarounds?

I have to sudo the command, so sudo'ing a shell or changing the 
permissions so the user can execute it on the remote machine is not a 
valid solution.  Any help or suggestions are appreciated.

Thanks,
~Matt