Editing the ImpEx Configuration File 
Before uploading the ImpEx files to your web server, you must edit the ImpEx configuration file (upload/impex/ImpExConfig.php) to tell ImpEx how to communicate with your database(s).

To edit the ImpExConfig.php file, you will need to open the file in a text editor such as Windows® WordPad. (Note that we do not recommend that you use Windows® Notepad to edit ImpExConfig.php, as Notepad has problems displaying the line breaks in some file types.)

The settings in this file need to be edited in order to create a working configuration file. These settings are divided in two groups. The target* and the source*:

Target Database Information (Into which database do we import?)
targetdatabasetypeEnter the type of database here, usually this is mysql
targetserverThis sets the address of your database server. On most installations the database server is located on the same computer as the web server, in which case the address should be set to 'localhost', otherwise use the address of the database server as supplied by your web host.
targetuserThis variable contains the username provided to you by your host for connecting to your database server.
targetpasswordThe password that accompanies the database username should be entered here.
targetdatabaseThis value should be altered to state the name of the database that will contain your vBulletin installation on the database server.
targettableprefixIf your vBulletin installation uses a prefix on the tables, set it here.
Source Database Information (From which database do we import?)
sourceexistsIf the system that is being imported from uses a database, enter the details for it here and set 'sourceexists' to TRUE. If the source data is NOT stored in a database, set 'sourceexists' to FALSE.
sourcedatabasetypeEnter the type of database here, usually this is mysql.
sourceserverThis sets the address of database server from which you want to import data from. On most installations the database server is located on the same computer as the web server, in which case the address should be set to 'localhost', if this database is hosted on another domain use the address of the database server as supplied by your web host.
sourceuserThis variable contains the username provided to you by your host for connecting to your database server.
sourcepasswordThe password that accompanies the database username should be entered here.
sourcedatabaseThis value should be altered to state the name of the database that contains your other forum software data on the database server.
sourcetableprefixIf that database uses a prefix for the tables, set it here.
Note:
Please note that Jelsoft / vBulletin Support can not provide the values you require for your database(s). These variables are only available from the web host providing your web/database server.

If you need to create a new database for vBulletin to use, instructions for doing so in a variety of systems are available here.
When you have finished editing the ImpExConfig.php file you should save it again and prepare to upload the file to your web server.
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