When you install any application using VAdmin, all it does with regard
to databases is to create the database in the /var/db/mysql directory
with no tables installed. This is to provide you with the database
name that is necessary for most installations of web/php based
applications.
What the VAdmin installation process does NOT do is to give
authorization to the database that is created. Consequently, you have
two choices when installing scripts from VAdmin.
1) You may use 'root' and the password for your 'root' mysql user
(by default, this is the password for your administrative user on your VServer)
2) You can create a new mysql user and password (either via the
command line, or through phpMyAdmin), and then give that user
authorization for the database that you created in VAdmin.
If you have any problems or questions please let us know.