I want to create a button on the Main Menu, or maybe the Information Centre sub-menu, that says "Connect to LAN". This I think can be done by editing /home/share/mythtv/XXX.xml. However I want it to run the following commands:

iwlist wlan0 scan
iwconfig wlan0 essid MYNETWORKNAME
ifconfig wlan0 up
dhclient wlan0
ifconfig wlan0 inet 192.168.0.2

So, how do I go about this?

Can I save those commands in a text file, make it executable and then tell the XML file just to run the executable text file? Is so, how do I do this exactly? If not, is there a better way to achieve this.

--- Reason for doing this is that my wireless connection is temperamental and gets cut out, it never connects on bootup using /etc/network/ method and always hangs. I want to manually connect/reconnect without going into a console or using a keyboard.

and to answer myself....

chmod 755 to make my file executable

and point to it in the ACTION part via...

EXEC /wireless