I have tried export DISPLAY=:1 and export DISPLAY=:0

Both give me the error "Cannot open display:1" or "Cannot open display:0"

Why does raspbmc give my pi a different mac address to the default os? I thought the mac address was set in the factory on the hardware side? So should different OS's not be giving me the same mac address?

To launch a command automatically on login, put the command into a file named .bashrc in the user directory (for example /home/pi) For example, the file could contain chromium-browser --kiosk www.google.com to launch Chromium in full-screen pointed to www.google.com I have done this but it does not...

I have set the proxy in etc/environment but apt still hangs and can't connect to the web.

If I use sudo apt-get -o Acquire::http::proxy 111.111.11.11:8080 update. Everything works fine so the proxy is working, apt just is not pulling the settings. How do I get apt working?

We have a pi for showing office stats etc on a nice big screen. However it can't connect to the internet as we need to set a proxy address for it. How do I do this?