My wife is the director of a children's emergency shelter. All the kids there got DS lites for Christmas. They have now discovered how to send text messages to each other and are using this method to create all kinds of problems for the staff. Is there any way to disable or block their ability to send text messages to others? This sounds innocent but in this case it is far from it. They are using it to intimidate and send vulgar messages to others. Please help, we don't want to have to take away their ability to amuse themselves.