Cingular also has wireless cards for your computer, though I think it just uses cell towers, so it won't be whooping fast. Though in maybe the next 5 years or so, the new networks will be out (tmobile is supposed to be first rolling it out, though who really knows) which will provide high speed data capabilities and more world networks (what i mean is same phone you use here, you can use in europe,china, or wherever).
