If I were you, I'd try downloading the free 30-day eval of Acrobat 9 Pro, and with a fresh install, see if you can make it work. I'm sure Acrobat 5 was useful, but it's a Win2000 era program, if not earlier than that.

Also, in passing, DO NOT USE SaveAs PDF. Always set up your system so that the PDF printer is (either permanently, or via plug-in, temporarily) as the system default printer. And then Print to it. (doing the intermediate step of saving as a PS file is unlikely to do much).

Art