X11 Forwarding

I am having difficulty getting X11 forwarding to work, DISPLAY isn't
set.  This is an LFS-4.1 based system, rather than a commercial distro
 (kernel-2.4.31, XOrg-6.8, openssh-3.9p1), so I may not have all my
scripts setup right.  (I added 6010 to /etc/services, and that was no
help.)  I have enabled forwarding in sshd_config on the server &
ssh_config on the client.  "ssh server" from the command prompt gives
me a login shell on the server.  Done from a client xterm I also get
the login shell.  "ssh server set" from the client xterm has no DISPLAY
variable.  "ssh server xkde", where xkde is a script in the default
search path to add to the path and "startkde", fails in xsetroot & xset
because it can't open the display.  I've tried running startkde from
the login shell I get on the server with the same result.  Honest, I've
tried searching the web for ideas, but nothing seems to work.  Some
said it was necessary to set DISPLAY and other said it wasn't. 
"DISPLAY=192.168.23.12:0.0 ssh server xkde" also fails.  The site just
says set the config files and it whould work, but no joy here!  Help!!


Paul Rogers  (paul.rogers@juno.com)
http://www.xprt.net/~pgrogers/
Rogers' Second Law: "Everything you do communicates."
(I do not personally endorse any additions after this line. TANSTAAFL :-)