set an activation password on BES.
Send an email that their deivce will be disabled if they dont activate ASAP.
Write detailed instructions on how they can activate in the email along with activation password.
Other than that, call each one and walk them through.
__________________ irony : many old timer posters have de-evolved into the trolls they once fought I am on http://supportforums.blackberry.com BES 10 running sweet for my Z10 and Q10