Two possibilities:

There is a conflict with PPS and XP/SP2. See this link for a fix:
http://windowsxp.mvps.org/ppsopen.htm

Save the attachment to your HDD. Right click on it and Open With | Choose
Program. Find and choose a program that works and then check the box: Always
use this program to open this kind of file. This should enable you to open
these attachments in the future.
--
Bruce Hagen
MS-MVP Outlook Express
~IB-CA~

"glamart" wrote in message
...
When I try to open an attached Power Point file using the MS PPt Viewer,
it says no file association exists. However, the file opens fine if
downloaded to a folder and the file association appears OK? Any ideas will
be appreciated.