registering a session variable from a select statment.

Hi, I have a user auth script. Very simple and works. when I check the username and password I check it against a select all the values from the user table where the username and password match. (inputted from a 2 text boxes) like so //sets and runs SQL statement that brings back all info on user which matches us ername and password. $sql_authorisation = "SELECT * FROM account_details WHERE account_name='$login_username' AND account_password=PASSWORD'$login_password')"; $sql_authorisation_result = mysql_query($sql_authorisation); I then register 2 session variables $login_username and $login_password I would like to register a session variable from the select * I did earlier from the field user_level in the select statment so session register $user_auth_level='user_level' is this the correct way to do this ??? Thanks, Matt.