VNC Viewer

[namtih]

As Koenkk already said, X11 and XBMC aren't good friends as there could be some problems with the libraries and XBMC isn't able to start anymore. But as I was testing some web browsers, I was able to get X11 and XBMC running side-by-side.
But please make a full backup of your SD card/installation before testing it, as I only tested it with XBMC RC1 and not with later versions. So it could be possible that your XBMC will not start anymore after installing X11. So please make a backup.

1. Open the command line of your Rpi
2. Shutdown XBMC

Terminal

sudo /etc/init.d/xbmc stop

3. Install X11 and lxde

Terminal

sudo apt-get install xorg
sudo apt-get install lxde-core --no-install-recommends
sudo apt-get install lxde-icon-theme

4. Install VNC viewer

Terminal

sudo apt-get install xtightvncviewer

5. Start the X11 environment

Terminal

startx

When you click on the icon in the left corner, you should hopefully find a VNC viewer icon.
If you tested all, leave the X11 envirnment or reboot the Rpi. If XBMC doesn't start anymore, try the following command from the command line:

Terminal

sudo dpkg --purge libtag1-vanilla:armhf libtag1c2a:armhf gstreamer0.10-plugins-good:armhf
sudo /etc/init.d/xbmc start