4
1. If you don't don'y know your user-id (uid) number then, using phpmyadmin, navigate to the yourprefix_users table and find it there.
Then:
2. navigate to the yourprefix_groups_users_link table, find your userid number and edit your details so that your uid has an entry of 1 in the groupid column.
This should give you admin rights so that when you login you can get to the admin panel from the User Menu.
As always, backup your database before editing it just in case......
HTH