I've read through all the posts on how to set up an administrator access and I get it.  My problem is when I go to try and find the local users through computer management I get a prompt that reads:

"Do you want the following program to make changes to this computer."

Then underneath it says "to continue, type an administrator password, and click yes" but there is no where to type a password in and the yes button is not clickable.  Can anyone help?  I have only 1 user set up on this computer so I don't understand why it is not the administrator of the computer.  Thanks for any help.