There is PDFCreator (http://sourceforge.net/projects/pdfcreator/) and there is apparently PDF-Creator. Some lawyer is smelling money, undoubtedly. This program masquerades as a printer driver and manages the Ghostscript conversion of anything thrown at it. I imagine making something like this portable would be tricky if not impossible, but given the advent of affordable 4- and 8gb flash drives, the size of Ghostscript+typefaces (not "fonts", children; typeface is a design while fonts are particular size-implementations) is not so daunting. I assume the nasty part is making a pseudo-printer-driver visible in different computing environments?...