[ALUG] using X across an ssh connection - how?

I'm trying to use X Windows across an ssh connection. It's an ssh connection I've used for a long time for normal terminal command line connections so I can ctually make the connection successfully with no problem. To try and use X I've changed the command line from 'ssh -x <remote>' to 'ssh -X <remote>'. The ssh man pages say that ssh will set the DISPLAY environment variable but it doesn't seem to do so, 'echo $DISPLAY' produces nothing. What am I doing wrong? -- Chris Green (chris@areti.co.uk) "Never ascribe to malice that which can be explained by incompetence."