I find that it works admirably.
Just go to print as normal but, instead of choosing a Printer in the initial print dialog box, check the PDF button (bottom left in 10.4) and save your document as a PDF.
Is that what you are trying to do?
I'm looking for freeware/share to create PDF files for Mac machine. Somethg like CutePDF (too bad it does not support Mac). Its like a virtual printer installed on your system. You could actual printer anythg on your system where the output is PDF file. Can recommend any?