The admin tool comes with my default settings
I usually create separate databases based on EQEmu version, since the database structure changes so much. In this case, you need to click on Preferences in the admin tool and change the database name at the top of the pop up window. For most installations the database is simply called "eq" as oppsed to "eq311". You should also check the username and password fields and possibly change them to the ones you use for your database.
WC