Hi oioldman, Thanks for your reply. The problem seems to be that I have deleted all the files. I had version 7 installed, and deleted teh whole lot. However, when I tried to re-install it, it told me that I can only download version 7 if I have already downloaded a previous version, namely 6.2 or the like. I tried to download that, and from tehre do an upgrade, but it wouldn't allow me even to do this much. Strange really. Technically, therefore, at the moment, I have nothing installed. Sorry for what might sound like an extremely stupid question, but could you explain what you mean about being looged on as an administrator?? I am a complete beginner when it comes to computer-y things!! Thanks again...