MyBB Community Forums

I have big/small problem, when I am installing forum, I write database name, user name password etc. as it be... but it write it to me:

Could not connect to the database server at 'localhost' with the supplied username and password. Are you sure the hostname and user details are correct?
Could not select the database 'forum'. Are you sure it exists and the specified username and password have access to it?

Do you know what I do bad?

USER NAME, PWD ETC IS CORRECT !!!!!! I know it...

Check with your webhost. We can't do anything to fix it because we just use the username and password you provide.

Note though, many hosts prefix your username for your host account before the MySQL username and database name. So for example, if I have a site at hostgator.com with hosting account username 'mouse,' when I try to make a MySQL username called 'phillip' the MySQL username is mouse_phillip.