You all may already know about this service but I just found it today. Tried it out and it worked just fine. I converted MSPublisher files to PDF and they were rendered exactly as intended. I've used some other non-Adobe products in the past and the results weren't very good.
Anyway, if you're like me and are using a PC, don't own Acrobat and don't want to pay for Adobe's online pdf conversion service (it's very good BTW but $9.99 a month), give it a try.
B.J.