Sorry

There are twenty question boxes, q1-20 and answer boxes, a1-20. Q1-20 are laid out as an array, whereas a1-20 are on top of each other (1 at bottom, 20 on top)

a1 has its animated entrance triggered by clicking on q1 button and its exit triggered by clicking on a1 itself.

I'm actually using Powerpoint 2007 though, if that makes a difference?

Thanks
Chris