Hi, I have my iphone 4 through ATT and I've currently got the unlimited data plan. I'd like to use tethering for my iPad. There does not seem to be any clear answer as to whether the basic tethering plan will allow me to get Push email from our company Exchange server. I've asked two different reps and they say "it lets you connect to your company server." Well, what the hell does that mean? We've got 20 servers. If I don't go with the "enterprise" plan does that mean I can connect to no servers? If I switch from unlimited to their basic tethering, I think that will be enough data for me, but if I have to go $65 just to get Exchange mail, they can forget it. Do you understand the different tethering plans?