New MacBook...no administrator?

Hi
I just got a new MacBook and set it up the same way that I set up my imac and whenever I go to make changes it says that my administrator password or username is not correct. The account that I set up should be considered the administrator account right? But in system preferences under accounts, it isnt listed as an admin and I cant change it because I dont know what the user name or the password is for the admin because I never created one otherwise.
anyone know how to fix this?
thanks
veronica

Click other at the login screen and put root as the user and try your password.

Moving thread to a better forum.

Administrator user changes to standard: Mac OS X 10.5

this may help.

Thank you, that worked perfectly