mysql start

[eoghan]

Hi
Im trying to start mysql (version 5.0.27) using:
$sudo /opt/local/libexec/mysqld --user=mysql
Im getting the follwing error:
070107 15:11:45 [Warning] Can't create test file /opt/local/var/db/ 
mysql5/eoghan-js-Computer.lower-test
070107 15:11:45 [Warning] Can't create test file /opt/local/var/db/ 
mysql5/eoghan-js-Computer.lower-test
/opt/local/libexec/mysqld: Can't change dir to '/opt/local/var/db/ 
mysql5/' (Errcode: 2)
070107 15:11:45 [ERROR] Aborting

070107 15:11:45 [Note] /opt/local/libexec/mysqld: Shutdown complete

Could someone help me on this please?
Thanks
Eoghan