During the reinstall of Acrobat 8.0 on my Vista 64 bit computer (on a new harddrive) I was asked to insert the Win Vista Install Disk but was unable to do it. Evidently I need to get the 'AdobePDF.dll' file installed and don't know how to do that. When I tried to check for updates, I got the error message: "There are no updates at this time. ...updates can';t be determined at this time." How do I get the needed file installed.