A lot of discussion about this very topic on Orchid in the past, so
go back in the Ganoksin archives and dig up the comments. One
company name that kept coming up was Tea-Mac, Inc. They are a credit
card processing company in PA, and are proud of the fact that they
cater to folks in the arts. They have been nothing but great for me.
I’ve sent quite a few friends there and haven’t heard any complaints.
They have various terminal choices and when you call and talk w/
someone there, they probably will be able to answer the ACC Baltimore
question you have, as well. That’s a guess, but won’t hurt asking.
This is a disclaimer; just a satisfied customer for 4 years now.