Printing problems

[JudyIver]

I'm trying to print W2 forms from a MS Word mail merge document I created, using data imported from an Excel spreadsheet. When I try to print the forms (on preprinted forms), the output is weird. I'm selecting 2 pages per sheet and it is printing the data all on the right half of the paper in a font so small, I can't read it. I used to be able to do this when I was using an older version of MS Word. What do I need to do to get these forms to print correctly?