After you have successfully downloaded the ImpEx package to your computer you will need to prepare the scripts to be uploaded to your web server.
The first thing to do is to decompress the package into its constituent files. If you downloaded the .zip package and your computer is running a recent version of Windows® all the tools you need to do this are available as part of Windows®. This section will assume that you have downloaded the .zip package and that your computer is running Windows XP.
To extract the files from the package, open the folder on your computer where you saved the ImpEx package and right-click on its icon, then choose Extract All from the pop-up menu.
This will open a wizard to guide you through the unzipping progress. Accept the default options suggested and the system will decompress the files from the zip package.
When the unzipping progress is complete, you will find that the process has created a new folder called ImpEx_versionnum_licensenum (where versionnum is the version number of the package you have downloaded, and licensenum is the license number of your vBulletin license).
Within this folder you will find a further folder named licensenum.impex, and within this folder will be a collection of readme files and a folder called upload. This folder contains the ImpEx files that need to be uploaded to your web server.
However, before you upload the files you must make some changes to the ImpEx configuration file. This file is located in the impex folder (within the upload folder) and is called ImpExConfig.php.new.
The first thing you must do is to rename this file from ImpExConfig.php.new to ImpExConfig.php (removing the temporary .new extension).
It is also best to only upload the systems modules that you want to import from. There are over 70 importers and ImpEx will only use the systems that you need. In the impex/systems folder you will see many folders that contain the individual importers, if you are only importing from phpBB2, then only upload that folder.