Hey jonabyte, I wonder if you ever read the documentation at all. Getting a user for Enterprise Activation (EA) involves these steps:
In BlackBerry Manager:-
(1) Add user
(2) Set activation password
Go to the handheld that you've confirm with server provider that it is provisioned for BlackBerry Enterprise Service:-
(1) Go to the EA icon
(2) Key in email address
(3) Key in activation password
Once it says "Activation Complete", you should be seeing user status as "Running" in the BlackBerry Manager.
See KB03674 - Set up an enterprise activation
for more information.
BTW, RIM's Technical Solution Center search engine is pretty user friendly, you can easily search what you want. Try search using "enterprise activation". Here's the link - BlackBerry Technical Solution Center