That image link shows nothing.
If you click on Goodies -> Manage MySQL, you’ll get a list of databases you have. In the next column is a hyperlink for the user(s) with access to the database. If you click that link, you’ll get info on their permissions, which hosts can access (%.dreamhost.com is one of them), and their password…yes, in plain text…doh
But that’s what’s set up for you and had better work.