Using the BES User Admin service, create a web interface for adding and removing users.
Often it's not so convenient to have to use the BlackBerry Manager to add, remove, or just gather statistics about your users. Until very recently (Version BES 4.0 SP1 Hot Fix 2, in fact), the BlackBerry Manager GUI took painfully long to load the user list, because it has to make a connection to each user's mailbox to retrieve statistics from the hidden folders where they are stored. This made remote administration across even a fairly sizable network link a real chore.
With the BES User Admin service, you can set up a web interface through which to add and remove users and view statistics from a web browser. Not only can you manage BlackBerry users remotely without installing the BlackBerry Manager MMC, but it is quicker than using the BlackBerry Manager remotely because the BES is retrieving the statistics and then just returning them to your web browser over HTTP.
Because it requires that a web server be installed, your BES is probably not the best place to run this hack. With the critical nature of your BES, you should try to minimize any extraneous services on that machine. It is best to copy the BES User Admin client executable and DLLs to another machine and install a web server there.
To install the web interface, you'll need to install ActiveState Perl on your Windows web server if it's not there already. I used ...