In MS Word: Insert/Object...
Select "Create from File", browse to the mpp of interest and select OK.
There is an option to display the file as an icon, and/or to link the file.
Displaying as an Icon is pretty self explanitory-- double clicking the icon
will wake up Project. If you select the Link option, then changing the mpp
data will update your Word Document. Caution: the change is bi-directional.
Caution: The location of the linked mpp file cannot change (in name or
location) otherwise the word document will contain a broken link.
As Julie indicated, you will not see a full view of the Gantt Chart, you
have to do some scrolling around to get there.
If you use the Camera wizard as Julie suggests, you can paste the clip into
Word for a partial view. Then, create a hyperlink from the picture [Right
Click on it, and select hyperlink --- browse to the file and click OK a few
times]
None of it is pretty, but is does work.