Ray and Andrew,
I have created a user page with instructions for installing the interval program. If you think it needs to be moved or otherwise changed that’s fine with me.
I have a set of screen shots to go along with the instructions but I have been trying to get them into the wiki page linked from my Skydrive with no luck. Any suggestions would be welcome. The detailed instructions are rather verbose but they are aimed at new users who may not be familiar with the Raspberry or Linux.
I also plan to add a trouble shooting section based on information from the forum.
Dan