Just picked one up unlocked. Been playing around with it and am thinking about changing my AT&T data connect plan over. Before I pull the trigger, I want to make sure it can do what I want it to. I don't talk a whole lot (maybe 250 minutes a month), but I am usually over 1000 txt messages and frequently browse the web on it. I would also like to be able to tether it to my computer. Can I do all these things with it? What all would I need to get on the plan and about how much am I looking to pay?