What is administrator privileges when trying to install a download?

Answer

Administrator privileges allows the user full access to a program or network second only to the system account. If you don't have administrator privileges, you cannot do certain things You may be able use a program, but not upgrade it. If you are installing a file or program and you don't have administrator privileges, you may not be able to install the program or file. If you don't have administrator privilege, you may not be able to change computer or network defaults.

To get privileges if your running vista

start menu\click on your display picture top right\turn on or off user account\tick the UAC box