Boston Logan free ware scenery and Admin problems.

Last night I downloaded and attempted to install the excellent looking Boston Logan scenery. Upon extracting the files to FS9/Addon Scenery/Scenery per the directions, I restarted FS to enable the area in Settings. Then I get the error message that I cant install files on the PC, and to have the administrator install the scenery files.No, there's no scenery installer. Its just a zip file and when I restarted FS after installing it per the directions, I get the message stating that I cant install the files since Im not the administrator even though Windows says that I am. I have even uninstalled the scenery and deleted it, and still get the message. What gives? Thanks!Eric