How do you create a new database(mysql) user using phpMyadmin? Do you have to use the command line tool?
No... Unfortunately. I'm using 1and1 for hosting. They're telling me you can't create a user from the phpmyadmin control panel. My control panel differs from the one in the site you posted. I don't have access to 'privileges'.
Are you trying to add an additional user to the database? At 1and1, a user is created when you create the database, you can see here at the bottom, http://faq.1and1.com/applications/mysql_administration/3.html You'd think they'd offer you more info about how to go about doing this rather than just saying you can't. After some searching, I found this but it's older. From: http://www.colinwong.com/content/technology/1and1_Web_Hosting_Review.php
I actually figured out my problem. I was trying to install drupal on my site. 1and1 hosts the database on a different server so I had to change "localhost" to the url of my database. Thanks for your help.