Hello, i cant login to my admin page.

i installed zen cart and set all the admin username, password and email.
Then i switched out databases with one that was made for me.
I made sure all the info was the same and that my configure.php files were not changed.
i cleared all cookies
i went to myphpadmin, and used the sql query's that i found in the faqs


Howver, i still get the "wrong username or password" login message

is there anything i can do?