So, I'm really leaning towards buying an iPad. But, the one thing holding me back is my confusion over the keyboard dock. Does it require that it's plugged into an AC outlet to use the keyboard? If it requires being plugged in, I'm going to just forger it and pass on the iPad. But, if I can use it straight-up with the iPad without being plugged into an outlet, then I'll definetly get an iPad. It would be perfect for taking notes in class. If I can carry the iPad & keyboard dock in by backpack & use them straight up that would be sweet! Do you guys know? What do you think?