I've got a PowerPoint presentation that loops through a set of slides and goes
back to the beginning, for unattended display. But... on one slide there's a
button to launch a different application (Stella modeling software from ISEE
Systems). I've got two problems with it:

1. WindowsXP pops the familiar "this program may be dangerous" warning
message. Is it possible to suppress this?

2. When the program exits, *or* if I navigate forward or back in the
slideshow, the animations on the slides - and even the sequential presentation
of slides - freezes up; it just brings up the found slide and stops. How can
the presentation be resumed?

            John W. Vinson [Access MVP, Powerpoint noob]