to unite it, u can choose one database to be the source database, and the other is the new place. do you know phpmyadmin program? u can use it. first, dump the source database into batch file (query file). and then, delete the command "create database bla bla ... ". copy the rest, save as to other file, for example query2.sql

now go to the database u want 2 unite. and then, execute query2.sql. finished, now u get the two database united.

hope u can understand and it works