When looking at the OP post, I went to the three website and couldn't find it.
OP, are you on pay as you go 3 or contract 3? if contract, you should be able to call them up and ask to add the bb data plan.
as it does mention a BB email add-on.
"That's it then. Cancel the kitchen scraps for lepers and orphans, no more merciful beheadings... and call off Christmas."