Hi Marty,

This is a fairly common issue. Information at the linked page should provide
the answer.

http://windowsxp.mvps.org/ppsopen.htm

--
Tim K.
aka Kuay Tim
MS-MVP - Outlook Express
Lynnwood, WA
*
"Marty" wrote in message
...
I just got XP about six months ago. I think PPS was not one of the file
types listed under Folder Options, but PPT was. So I added a PPS type and
told it to open with the Power Point viewer.

When I get an e-mail with a .pps attachment, it won't open when I
double-click on the attachment line. I get the "Unknown file type", "No
program associated with this type of file, etc." However, if I save the
attachment, it will open from Windows Explorer.

So why won't it open by double-clicking on the e-mail attachment line?