The MySQL manual (that was referred to)
http://dev.mysql.com/doc/refman/5.0/en/ ... enied.html
Gives the following information relating to your error:
If the following error occurs when you try to connect from a host other than the one on which the MySQL server is running, it means that there is no row in the user table with a Host value that matches the client host:
Host ... is not allowed to connect to this MySQL server
You can fix this by setting up an account for the combination of client hostname and username that you are using when trying to connect.
If you do not know the IP number or hostname of the machine from which you are connecting, you should put a row with '%' as the Host column value in the user table. After trying to connect from the client machine, use a SELECT USER() query to see how you really did connect. (Then change the '%' in the user table row to the actual hostname that shows up in the log. Otherwise, your system is left insecure because it allows connections from any host for the given username.)