the error 1045 means the user name and password you are entering is not correct.
Are you trying to connect to a local mySQL Server or a remote MySQL Server?
If it is a local MySQL Server, set the Host name to Localhost.
if it is a remote MySQL Server, you will need to find out from your host a few things, 1) Do they allow remote connections to the MySQL server 2) what is the mySQL Server address to use.