iWork Pages Converting to PDF
What sort of styling is gone wrong when converting to PDF? And which version of iWork and Mac are you running atm?

From experience (under 10.6) I can only say never to have had problems with converting to PDF or printing as PDF. If your iWork is messed up, you may want to consider reinstalling. (Use CleanApp for that) or install a newer version (do you have iWork '09? have you fully updated it?).