I have a pc with Vista and Word 2007. I have adobe Reader 9 or 9.1. Some free download or add on thing allows me to save word docs as PDFs. This worked fine to start with but then I found I couldn't move the PDFs I have created from one file to another or delete them. Next I found I couldn't move other PDFs I have downloaded from websites. Then I found I couldn't open the PDFs I had created but I could still open website PDFs I had downloaded. I can still open, move and delte PDFs created on a mac and sent to me by email or memory stick. What is going on? Please help!