Adobe Photoshop CS5 can convert your file to a variety of file types, including a PDF, by adjusting the "Format" option in the "Save As" dialog box.

How to Make a PDF in Photoshop CS4. When you composite images, retouch portraits, create exhibit displays and set up brochure graphics in Adobe Photoshop CS4, you may decide to save your work in ...

One alternative is to create PDF documents using Adobe’s online system. With a trial subscription, you can create five PDF files from other documents, just to get a feel for how the system works.