Switch between PowerPoint presenter view and another application

[Richard]

Using PowerPoint in Presenter View to run a slide show teaching classes in
basic computing, I want to be able to switch from my presentation to another
Microsoft application - e.g. Word or Digitial Image 2006, demonstrate some
element of that application to the class, e.g. how to crop an image using
Digital Image, and then switch back to my PowerPoint presentation in
Prestenter View at the last slide viewed. Is this possible?

Thanks for any clues!

BALLAMODHA