Java Programming

hi, i need to convert rtf to pdf (rtf-output generated by an old reporting program). a java class library would be great for doing this. i tried itext and pjx, but both of them can't read rtf.
it would be possible to generate pdf's from the report program but customers told us that the pdfs generated by the report program cannot be opened with the new adobe acrobat reader 8.0.
a printer driver such as win2pdf or pdfwriter is not possible, because we have many concurrent users and need therefore a multithreading implementation.