If you want to change "typical" office-file-formats (rtf, doc, txt) - do it with OpenOffice.org 2.4.1
! This program contains an in-build pdf-converter and you can do all pageformat-settings, while the documents in question are in these typical office-formats. But - don't forget to save these changed office-files using the "save as"
option, if you need the original formatted documents afterwards.