Inserting various formats into word

[Diana]

I've got some nice photos that I'm wanting to insert into
word (large manual) but the quality is greatly diminished
after inserted. The resolution isn't very high but they
are huge photos, so after reducing the size on the screen,
it should still have good quality ... or so I thought!

They are in photoshop, so I can export to several formats
and/or change size/resolution. What works best with word
for this type of project. It's a large document (100+
pages) and will have several images.

Thanks for any loud thoughts. Diana