I just ordered a Blackberry 8300 off of EBay and was wondering if the texting, email and browser functions will work automatically, or do I need to have them configured somehow? I've heard this from some people, and I have no idea how to configure anything.

I have AT & T service already. Will I need to purchase the multimedia package to have all this work, besides maybe having it configured? Will AT & T configure the phone for me?

Hope I don't sound like a total moron, but I've never had an unlocked phone before.