The following error message is displayed when trying to install ArcGIS Desktop:
Windows cannot access the specified device, path, or file. You may
not have the appropriate permissions to access the item."
Internet Explorer 7 Beta 2 or 3 is installed on the computer, which causes problems with ArcGIS Desktop using regcat.exe.
Internet Explorer 7 Beta may be installed after installing ArcGIS Desktop, but it is recommended that the 'ArcGIS 9.1 Desktop Patch for Internet Explorer 7 Beta 2 and Beta 3 Users' be installed. See the link in the Related Information section below.