Barba,
You must save your presentation as a PowerPoint show. Do to so, in the save
as dialogue, click the listarrow next to save as and choose PowerPoint show
*.pps.
As to the protection of the PowerPoint show, read this:
http://pptfaq.com/FAQ00038.htm

Signature
Luc Sanders
MVP - PowerPoint
blog: www.sixtiesfan.multiply.com/
>I love to work with power point and share my work, but jit arrived with all
> the working toolbar and the individual slides. To see the show they must
> ask
> for it and the other thing is that it can be change and I don't want that.