|For what it's worth, these are the file types used in MS PowerPoint:|
PPS and PPT are still the most widely used and those ending with an X are compressed files. In your general search it might therefore be worth also looking for security issues associated with these file types as well as the PowerPoint program itself. This could yield additional information that you can then piece together.
Also look into PowerPoint Macros (Macros being small programs that can be created when producing presentations). This is an area where there could be additional security issues.
Always pop back and let us know the outcome - thanks
message edited by Derek