If you have any images, diagrams or charts  on the slides, simply make a
textbox, position the textbox over image/diagram/chart, then send it to the
back (Right click on the textbox, select Order > Send to Back). Alternately,
go to Slide Master (View > Master > Slide Master). Create an additional slide
master, then put your name, and move the textbox away from the slide. Of
course, these are not the foolproof way of doing it.

Another way is digital signatures.
Click Tools > Options.
Select Security tab.
Set a password to modify. This prevent anyone from modify the presentation
and hence removing the digital sig.
Now, click on the digital signatures button, click Add.
Select the displayed digital sig and then ok your way out.
The presentation will be automatically saved.

- Add the text box then drag it off the sslide.  It won't appear during slide
shows.

- Add your name as one of the document properties.  (File, Properties)
- Add your name, encoded in some way, as one of the CUSTOM doc properties

- Add your name then run this macro:

Sub HideHideHide()
  ActiveWindow.Selection.ShapeRange.Visible = False
End Sub

-----------------------------------------
Steve Rindsberg, PPT MVP
PPT FAQ:  www.pptfaq.com
PPTools:  www.pptools.com
================================================

Thank you Gentlemen for your help. I'll try both to see which works
better for me.

Thanks again,

Talon