First, if the information you have to print upside down is fairly short, you could use WordArt.
There are several workarounds you can try, however. (To print something upside down you need to rotate it 180 degrees.) Unfortunately, Word doesn't have a way to easily do this, instead only allowing you to rotate text 90 degrees left or right.
For some printing jobs, you may have a need to print text both rightside-up and upside-down on the same piece of paper.
