Set a modify password in Tools > Options >Security tab and then save as >
"save as type" powerpoint show *.pps

1. create a show within a show,  follow this way,  create a blanl
slide,  click insert -> object...   select "create from file" then
import the premade .pps file,   with this, you've already embedded the
pps in a new presentation.  but there's a problem.  that you should
make sure that the pps file will be played automatically without any
interaction, as the whole pps file will be treated as one object in a
single
slide, so, when you click on the screen, the show will most likely to
be stopped.

2. one more. transform your presentation to other formats,  e.g:
distribute to pdf if no animations and transitions are used,  or
convert to mpeg, avi, swf ...  if it's heavily animated.

hope it helps

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Presentation tools, PowerPoint tips,  Free PowerPoint templates,
PowerPoint to Flash Converter,  PowrePoint to DVD technology,
PowerPoint and Elearning

www.sameshow.com

Do you have Windows set to hide extensions for known file types?  If so you may
not really have a PPS ... Windows and PPT might show you whatever.pps but it
could be whatever.pps.ppt behind the scenes.

Have a look here, esp. the part about beating Windows into shape:

Do this before using PowerPoint seriously
http://www.pptfaq.com/FAQ00034.htm

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