Hi there folks! I am working on a math tools suite for K-Grade 5 teachers. I am finishing up the apps now, but I would like to add a feature where if I were to update the program, instead of burning new DVD's or emailing all of them, have the program they would be getting check online to see if a newer version exists (maybe somehow check the date the updated file was modified?), and if it is newer, then download it?

Would anyone have any experience with that sort of thing?

Thanks!!