Hi Kell,
If you are referring to the hidden account called "Administrator" it
can be accessed by rebooting the system and taping the F8 key as the
system BIOS info passes by.
At the next menu select Safe Mode.
This should have taken you to the Welcome screen with "Administrator"
present.
If not press Ctrl+Alt+Del twice, and logon enter "Administrator".
If there was never a password created just click on "Administrator"