I have a computer running MythTV, and i was wondering how i could remotely connect to that machine, and start X applications on the already-running XServer?

Thanks, Karl

Try Putty and VNC. If your firewall only accepts SSH connections, it is possible to do the following:

1. Use Putty to create an SSH tunnel on your VNC port. I believe that the default VNC port is 5901.
2. Once you are logged in, you have to start the VNC server. On my machine, I just type "vncserver".
3. Start the VNC client on the machine that you created the SSH tunnel on.
4. Connect to "localhost:5901".
5. Type your linux password and your desktop should load up in a window. This is kind of like the linux version of Windows' Remote Desktop.

Let me know if this helps.

Thanks for your reply, but this is not what i am trying to accomplish. I will try to explain it a little better.

[Machine A] - My linux machine
[Machine B] - Other linux machine ( LAN, running X-windows)

Machine B is already up and running X, lets say for example, Xine is playing a movie.

I can connect via SSH from Machine A to Machine B, but i can not run X applications because the Xserver is being run by another user on Machine B. I would like to be able to lauch an application into that Xserver instance from another console, which happens to be remote. I hope that clears up my questions.

Karl

What I described will log you into your X server on Machine B. Anytime you connect to your linux machine with SSH and VNC, you are logging into the X server. The only catch is that you will be using a different display ("1" in this case). If you already have an instance running on Machine B, you may in theory be able to connect to display 0 with VNC (the display that Machine B is currently using). You would have to check the VNC server documentation for how to run your VNC server on display 0. I've actually never done this before (it's just a crazy idea), so let me know if it works for you.

Assuming you want to launch something over xine, or under xine (while xine is in fullscreen mode) you could just attach and set the env variable, but you'll need to run xhost + as the user running the original x session (to allow remote connections). Then:
ssh -l whoever machineb
export DISPLAY=:0
kwrite funnyfile.txt

This would launch kwrite on DISPLAY:0 (your already running X session) and open the funnyfile.txt which of course contains helarious things you want the person to see when xine stops, things like cat < tail, which we all know will mean cat's got your tail! ha ha ha... I was watching that Simpsons episode where Bart goes to the smart school and they make stupid jokes like that, sorry.

Cool

Thank you, this is exactly what i was looking for. Let the games begin...