You might want to be more specific. What version of PowerPoint are using?
Does the presentation have multiple masters? Will this be used on one
machine or many? A simple command for changing the design used is:
ActivePresentation.ApplyTemplate "MyTemplate.pot"
But I suspect you want something that does more than something this simple.
--David

Signature
David M. Marcovitz
Microsoft PowerPoint MVP
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.PowerfulPowerPoint.com/
> I need to write a macro for changing the design theme an entire PPT
> presentation but can't seem to get it right. Can anyone help me out?
> I need it very shortly.