Ok, in that case have a look at linking the images in rather than embedding. This will give you much smaller Word docs. You should be sending the file to the printers as a PDF anyway so moving linked files won't be an issue.

To link a graphic, choose Insert > Pictures > select your picture and click the drop arrow on the Insert button and choose Link to file. As long as you don't do picture corrections in Word, the file size will remain small. Any picture corrections should be done with the bitmap editor or scanner settings anyway.

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Andrew Lockton
Chrysalis Design, Melbourne Australia