Q: the new download of itunes will not run. I get a message during the process that I need to verify that I have sufficient privilege. then I get an error 126 and a missing file MSVCR80.dll. what can I do?

I'm trying to download the new version of itunes. durig the install i get a message that I need to verify that I have sufficient privilege. Then I get a message of a Windows error 126 and a missing file MSVCR 80.dll. I've tried everything on the support site and nothing works.