powerpoint controls

HI,

I am experimenting with a sort of interactivity in PowerPoint like a quiz that can be used over and over again. I am therefore trying to set up some templates.

The problem is that I dont know how to program powerpoint. Example I need to know how to set

1. my label.caption = "bla bla bla" on slide1 load.
2. need to set the checkboxes value to false on slide load
3. need to set the textboxes to empty also on slide load.

I need the start a variable counter at the start of the Presentation.

Simple questions but I have never done these in Powerpoint. Any help guys?