Adobe AIR Install/Uninstall Error Message – Administrator privileges

I have problems installing the updated version of HTC Sync Software. I am thinking that the possible reason for this is because the software Adobe Air is having conflicts in the installation. I got an error “This application requires a version of Adobe AIR which cannot be found.” I downloaded the newest version of Adobe AIR but still received an error on installing it. The error says “An error occurred during installation. . . An error occurred while installing Adobe AIR, Installation may not be allowed by your administrator. Please contact your administrator.” I am the only one who uses this computer. What is causing this? Please help.
