Try this fix:

http://www.winhelponline.com/articles/149/1/
Unable to open .PPS attachments directly from Windows Mail in Windows Vista

Hal
--
Hal Hostetler, CPBE -- hhh@kvoa.com
Senior Engineer/MIS -- MS MVP-Print/Imaging -- WA7BGX
http://www.kvoa.com -- "When News breaks, we fix it!"
KVOA Television, Tucson, AZ. NBC Channel 4
Still Cadillacin' - www.badnewsbluesband.com

"Bev" <bev@discussions.microsoft.com> wrote in message
news:1F6CB952-F519-4C97-ACBC-EE4D6F76164F@microsoft.com...
> My email has always allowed me to view emails I get that contain pps files
> however something has now changed and it won't let me. I get a message
> "This
> file does not have a program associated with it for performing this
> action.
> Create an assocation in the Set Assocations Control Panel' Is this in the
> main control panel of my computer or somewhere in Windows Mail because I
> can't find it. Can someone please help. thank you