I've resorted to having Hypercard act as a frontend while AppleScript does the real work. Except I can't figure out how. In fact, I'm not sure whether this should be Hypercard based, AppleScript based, or an intermixture of the two.

This is what I want to do. I want to take a directory, which would be supplied by a field in the stack, move the contents of that directory to another directory (the printer IRL), also supplied by a field, wait a specified number of seconds, again from field, and then finally repeat indefinitely until Command-S is pressed.