Is there a PDF File Creator which you can edit after the PDF file is reated? I also cannot see a "save" option in the "PDFCreator 0.8" program or do I look at the wrong place? Besides "PDFCreator 0.8" are there other PDF file Creators Programs on the Shareware market which I should look at?
AFAIK there's nothing that can change a PDF once created. That's in fact one of the advertised strengths of the format, in that it allows verifiable content (once you send someone a PDF you know exactly what they got and they can't change it and claim that that's what you sent).
My understanding is that PDF is just a compressed subset of PostScript. Sometimes it's encrypted. Editing one is basically as hard as editing the other: impossible. You could go PDF->PostScript->JPEG and do it like that I guess
If you have the unsigned PDF one than you can edit the file under Acrobat 6 Pro (limited capabilities, dont imagine edit like in Word). I just tried to crop, edit the text, and insert the comments. All works.