Installation problem – database not found, possibly wp-config issue?

Hi there

I’m doing an install, have setup a database and user via my Dreamhost hosting. Everything seems fine, but when I try to run the install.php I get the error message as below for my domain:

Error establishing a database connection

This either means that the username and password information in your wp-config.php file is incorrect or we can’t contact the database server at http://mysql.squarecatuk.com. This could mean your host’s database server is down.

* Are you sure you have the correct username and password?
* Are you sure that you have typed the correct hostname?
* Are you sure that the database server is running?

I’ve tried this several times, double checking all the info. Is there an issue with my wp-config.php file?

Very strange as I have other databases running and they seem fine…

Thanks

Howard