I'm not exactly sure what you are trying to accomplish but if you want to integrate them at a programmatic level, then I would suggest that you spend a fair amount of time with MapPoint's object model as described in the Visual Basic Reference.
You may also want to ask specific questions on the MapPoint newsgroup at microsoft.public.mappoint. People who answer questions there have used MapPoint on quite a variety of applications. I have not personally tried to integrate the products, but it wouldn't surprise me if someone on the newsgroup has.
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Walt Cygan