You should look into Arduino micro processors, they can be connected to all kinds of switches and screens. With a bit of programming, they can do practically anything. There also cheap. I'm sure a member with programming knowledge would be happy to write up the program for you.
daaaammmmnnnnnn.... i was gonna build this one day, oh well. thats another first off the list for the 405th to impress everyone. but wicked awsome kick ass job.