I need a new external drive. I have time warner cable. So can that utilize time capsule? How exactly does that work? I already have a all in one router and modem. Does the time capsule take its place as my wifi as well? I really only need a external drive. But I also got the new faster wifi in my imac so it would be nice to use it. Because I'm sure my router/modem is older style wifi. If it won't hook up with time Warner, which external do you guys recommend?