I can't login to my WP site (need help)

Can someone please tell me where and how in DreamHost do I set up a new username and password to log into my Wordpress site? I can not login with any of my username/passwords. I would be really grateful for any info or instructions you guys can provide. Thanks in advance.

You create these when you install WordPress. It will prompt you for a username and password.

Have you tried recovering your username password via the Wordpress “Lost your password?” link/function on the login page?