PowerPoint does a lot of its own compression. That is probably why the
file size is not reduced much by zipping. There is no difference in the
file as a PPS or PPT. The files are the same. The different extension
tells PowerPoint to open it as a show. You might want to check out this
information about reducing file sizes in PowerPoint:
--
David M. Marcovitz
Microsoft PowerPoint MVP
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.PowerfulPowerPoint.com/
=?Utf-8?B?TG91?= <Lou@discussions.microsoft.com> wrote in
news:63B1B172-E2C1-41D9-ACB8-964BA380888A@microsoft.com:
> I have a 5 MB file and even zipped it is still 5 MB. Prefer to attach
> it in an email as PPS, not PPT file type.
>