MySQL Replication Setup - 4.0.x

Preparation:
Make sure that server & client have log-bin turned on in my.cnf for mysqld
Master should have "server-id=1" and slave should have "server-id=2"

Master:
- setup a mysql user account for the slave only, and grant only REPLICATION SLAVE prvilege.
mysql> GRANT REPLICATION SLAVE ON *.*
    -> TO 'repl'@'%.mydomain.com' IDENTIFIED BY 'slavepass';

Open a mysql client and leave it open, then flush the logs:
mysql> FLUSH TABLES WITH READ LOCK;

Create a db dump, and copy it to the slave.
# mysqldump --opt database_name > database_export.sql

Get the status of the master that you'll use later, and write down the details:
mysql > SHOW MASTER STATUS;

Unlock the database so it is read-write again:
mysql> UNLOCK TABLES;

Import the db dump into the slave.
# mysql database_name < database_export.sql

Slave:
Using the data from the master status, run this query:
mysql> CHANGE MASTER TO
    ->     MASTER_HOST='master_host_name',
    ->     MASTER_USER='replication_user_name',
    ->     MASTER_PASSWORD='replication_password',
    ->     MASTER_LOG_FILE='recorded_log_file_name',
    ->     MASTER_LOG_POS=recorded_log_position;

Start slaving:
mysql> START SLAVE;