You don't...Enterprise will always show, but Personal/Internet will be added once you subscribe, from your mobile service provider, to an adequate BB-level data plan. Generic data plans usually do not include email...but your carrier can tell you what plan you need, from them, to activate the services you desire.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.