Hi R4+Z
Do you want to open a .pdf, modify it and save it (i.e. Edit an already created .pfd) or create a file and save it as a .pdf?
There are several free and shareware programmes that will appear to your system as a printer which generate a .pdf file as output.
There are alos programmes out there that will crack open a .pdf even if it is protected.
The open office suite lets you print to .pdf as an option, it works very well, if you are using MS office just open th erelevant file in OpenOffice and save it as a pdf. see :
www.openoffice.org
Look here for freeware:
www.sourceforge.net search for pdf
Have a look on here for shareware:
www.tucows.com search for pdf
If you just want to do a one of save as a pdf Adobe used to have a service on their www site that would let you do upto 10 pages (I think) once you registered. All you need to do is upload the document and they email back a link to the file.
Hope this helps.
Memetic