Hi John,
If you have the source code for the arduino, I could mod it for you. If not I would need to know what the Little Bugger does and I would have some idea how long I would need to code and test from scratch. I have three Arduinos of varying strengths sitting a box and the arduino community has a lot of code and functions available. Give me a call in a week if you wish to discuss. At the mo I have a bloody awful cough and cold and feel as rough as a badger's arse.

Cheers Rob

PM me if you need my phone number.