** Lrry.
I purchased Alarm Clock Pro 9 - Multi-Functional iTunes-Enabled Alarm Clock, Stop Watch, and Timer after the free ones out there just didn't cut the mustard. Very customisable and can use Apple Scripts as well to achieve what you need and more. I believe there is a free version and trial period that i used to see what it did and was impressed so forked out the dosh. You didn't mention money so if you have a spare wad in your wallet this is a good buy
Cheers