Jim recently bought a Samsung Galaxy SIII and he's rooted it. He wants to use a hotspot app and tether his laptop with it.
Leo says that AT&T will allow tethering/hotspotting for it, at a monthly price. All current Android phones can do it, without rooting. It's in the settings. Jim says it shows up as an AdHoc connection on his computer. Leo says it shouldn't see it as an AdHoc connection, it should see it as a WiFi hotspot. He'll have to add hotspotting from AT&T first, though.