VB and PowerPoint Presentation

[t10]

I have made a program which controls PowerPoint Presentation.
My program opens and runs PowerPoint Presentation.
It works like that:
1. my program opens PowerPoint presentation
2. then runs Presentation
3. my program minimizes

On Win 98 everything works weel.
On Win 2000 all 3 steps works, but then my program
shows on the screen and Presentation in the back.

What do I have to do, that PowerPoint presentation stays in front ?

Thanks, Erwin