Admin rights?

Adobe digital editions-

When I click run I get a run as screen saying I may need admin rights. It says I can use an account called "administrator" (no such account is setup), or use the current account (which has admin priviliges).

If I try administrator with no password it fails. If I try current account it says admin priviliges are necessary (The account is an administrator account).

I tried putting a password on the current account but when I choose current account the account name and password fields go dark.

I'm at a loss as to what to do. Its a W7 Home edition SP1 machine. I also tried Firefox and Chrome.