If operating system, what operating system and version (i.e. XP Home or XP Pro).
If XP, it's not uncommon to find that someone missed setting a password for "the" administrator account. Or, you might google "password reset utility". They exist.
I am hooking up a computer that I haven't used in a while. It is password protected and I do not remember the password. What is the best way to get past my password so I can access the programs as administrator?