If you forget your password, you have to get your SQL thinking cap on and change it. If you don't recall the name of your database, do:

$ md5sum.textutils --string oldpassword

d5b5fffc89f961903fb3c9a173f1b667  "oldpassword"

$ mysqlshow

Then login as follows:

$ mysql phpaga

mysql> select usr_id, usr_login, usr_passwd from users;
+--------+-----------+----------------------------------+
| usr_id | usr_login | usr_passwd                       |
+--------+-----------+----------------------------------+
|      2 | sean9     | 4f2a1493c661c0f2d2ee9a37040b8082 |
|      3 | neal9     | 3e7023ed317ed603851f22d510924ca1 |
|      4 | akahn     | b27fad92c6ddeddf0bfd6eb9871a8c79 |
+--------+-----------+----------------------------------+
3 rows in set (0.00 sec)

mysql> update users
       set usr_passwd = 'd5b5fffc89f961903fb3c9a173f1b667'
       where usr_id = 4;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

Note that if you don't have md5sum.textutils installed you can also use this bit of php code to get the hash string:

<?php print md5("oldpassword")."\n"; ?>