Aquestion on large maps

[zippykat]

Hello all. There is an old quote.
"There are no stupid questions. Only stupid people" I feel like I am falling into that category.

I am attempting to create a world for a 2nd Edition D&D Campaign and have garnered some pretty good tips off the boards here. especially on parchment effects and I wish I could remember who created the photoshop brushes for mountains hills and trees but they were a lifesaver.

I am almost finished with the map but want to enlarge it to 33" x 25 1/2 " or basically nine sheets of letter size paper. My problem comes from trying to print the different sections. Whenever I attempt to print in photoshop it automatically shrink the map down to one page. How do I fix this?