Cannon't create datasource

I go to add a datasource into Coldfusion Administrator and I get a weird error. which is this error.

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
Could not create connection to database server. Attempted reconnect 3
times. Giving up.
 The root cause was that:
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
Could not create connection to database server. Attempted reconnect 3
times. Giving up.

I use wamp server with Apache and MySQL 5.1.2.3(I think thats the version), I was told that I'd need to download JRun but I dunno, if that's my problem or not I thought Coldfusion 9 came with it.

Any help would be very kind thank you in advance.