Any way to view Microsoft Publisher files in Mac OS X
If your idea is only to READ and never to edit, I would suggest that you convert the file into PDF format using any of the thousands free converters out there, for example:
http://www.publishertopdf.com/
So you don't need a license of Microsoft Publisher neither CrossOver.
Another vote for Crossover/Wine. Not sure how well Publisher runs personally, but I know that the rest of Office 2003 (if that's the version that you're using) works perfectly (and that's using the free version they gave out a couple of years ago, I imagine it's only gotten better since).