I have DSL through AT&T and just bought an iPad. I got the 3g with Wifi. I am guessing it is hooked up to our WiFi in our house. I understand AT&T DSL customers can hook up to AT&T Hot Spots for free with login and password. Is this the same for iPad users? Can I set my iPad up to automatically search for AT&T Hot Spots and prompt me for my login and password?