I friend of mine designed stationary for me in InDesign.
How do I get it into word?
I'm assuming he thought you were going to have them printed. Even so he
should provide you with a PDF, since native files are going to have font
issues, etc.
I work mostly in InDesign, so for those clients who need a Word version,
I reconstruct (as close as possible) it into Word. Maybe your friend can
isolate the text areas as eps files then you can place them where they
correspond in the Word doc.