And as a footnote to that, if you need to recover your admin password and are not scriptorally adept, you can simply:

1. Create a new account with whatever password,
2. Let D7 automatically do the hashing and stick them in,
3. Copy the password hash and the salt from the new account to the lost administrator's account in the table containing member data in your database with PHPMyAdmin.

That shouldn't be too hard for anyone who has gotten Dolphin up and running.