There are a few ways to do what you want to do:

(1) You could use VBA and get the exact affect you want with two simple
lines of code, some thing like:

MsgBox "Wrong"
ActivePresentation.SlideShowWindow.View.GotoSlide 3

(2) You also do something with animations and/or transitions that also
does what you want. I'm thinking that your Action button could link to a
hidden slide that is right before the beginning of the module. The
hidden slide could be set to transition automatically after 2 seconds,
and it would contain the word RIGHT on it. The ONE button could link to
that slide, which would show for two seconds and automatically go to the
next slide, which is th start of the module.

I'm sure there are other options such as having the button trigger an
animation with a shape that might cover the whole slide and have the
word WRONG in it. The shape might have a mouse over effect that links
back to the beginning of the module.

--David

Bonnie

Create two slides one for right and one for wrong. Make each a one sllide
custom show and have the buttons link to the appropriate custom show with
"show and return" ticked. See here for more detail.
http://www.pptalchemy.co.uk/custom%20shows.html