You could probably just get an EVDO card and service from Sprint or Verizon.
It's not that expensive anymore (I think around $60/month).

On Wed, Aug 06, 2008 at 04:48:52PM -0500, John Rodgers wrote:
>  Good Volks,
>
>  I have a need to be able to operate a credit card scanner connected to a
>  laptop computer that is internet enabled and has a wireless connection.
>  Problem is I haven't a clue as to how to set this up. Heck, I don't have
>  a clue as to what specific equipment I need or what services I must
>  purchase.
>
>  I have a merchant account, I have a card scanner. I've yet to purchase
>  the laptop, but that is coming once I understand all this, But what
>  about the wireless part - the internet connection and the wireless
>  service for such a set up.What is needed to make the laptop "internet
>  enabled?" And what about the wireless connection?
>
>  Merchant Services companies usually make two type of card machines - one
>  that dial a number over a land line, or one that dials up on an wireless
>  service of some sort. I don't know what that latter is. The first
>  doesn't work for me because of the land line connection issue. The
>  second is so expensive as to be prohibitive.
>
>  I have found one service that provides a scanner that can be use at the
>  point of sale, but you must take it home, connect to your internet
>  enabled desktop or what have you through the USB port, and it
>  automatically up loads. the data over the internet. Surely there must be
>  a way to do the same with a laptop using a wireless connection - AT the
>  point of sale.
>
>  Is there anyone that know of these things?
>
>  Please respond off list.
>
>  Thanks,
>
>  John Rodgers
>  88 GL Driver