Judy,
In later version of PowerPoint, right click on it and go Save as Picture. In
earlier version, save as a web page to a folder on your hard drive. Then go
looking for the image in that sub-folders of where you saved it (make sure
you save as html and not mht).
If you only have the viewer, not many options there.
--
Regards,
Glen Millar
Microsoft PPT MVP
Tutorials and PowerPoint animations at
www.pptworkbench.com
glen at pptworkbench dot com
Please tell us your PowerPoint / Windows version,
whether you are using vba, or
anything else relevant