PowerPoint and touchscreen problem

[William Grange]

I have run into a problem in composing inter-active programs in
PowerPoint for a touchcreen computer for use in a museum galery by the
public.

Although the on-screen buttons work fine with a mouse - when touched
they intermittently freeze up. We have tried various things, such as
changing the pointer options in the touchware program, without
success.

I wonder if the problem might lie within PowerPoint. If anyone has
encountered this problem before and / or have any ideas what might be
wrong and might suggest a solution - then I would be very grateful.

William Grange