You can embed any file type into Word (Insert, Object, Create from File,
Display as Icn or Link to file) and that included PPS and WMV files.
I am not sure if you can have these files automatically activated when
opening the Word file, but if it is possible it will be with a macro.
Lets hope someone who knows either way jumps in here, or try posting a new
question in the vba.beginner newsgroup.
Best of luck
DeanH