Yohev,

Sorry, I didn't think of this until now...

Is there anybody in your company that is a member of the administrator's group? If so, then that person should be able to access the ADUC on one of your domain controllers and then change the password for the administrator user.

Did your former administrator create a custom MMC (Microsoft Management Console) for the sole purpose of administrating users and passwords? That is a remote possiblity you should check.

I can't believe that guy left you hanging like that. That's just ignorant.

S>