Your computer wont let you download anything it tells you that you are not the administrator despite the fact that you 100 percent am?

This could depend on a number of things. The first being the operating system (OS) you are currently using. Second, you may be logged in as a user who is not listed as an administrator. Before you jump to any conclusions, check these to make absolutely sure you are on the administrator account. Some OS settings require that you log in via "safe mode" to access the administrative controls, such as Windows XP.