Just speak up. If you have special expertise you can hit them over the head with, don't hesitate to use it, just as they do. You can do the same. This is easily resolved by selecting a 1,200 dpi printer as the default printer in Word and so will always maintain the layout. Here your goal is not clarity but seizing the advantage, displaying your superior knowledge in the subject so he has to back off.
Men do it all the time.
Although we have to remember that men and women co-workers are all on the same team working for the same goals, it helps to remember a few other items as well. And lastly, don't forget, the point is to win.