Someone school me on wifi service
I've been in a couple of customer sites lately (i'm a contractor) where they will not let me plug my laptop into their network or use their internet connection. I'm tired of this (I need to be online for email and other reasons) and am looking at getting a wifi card to go into the laptop's pcmcia slot so I can bring my own internet access with me. I know you can also plug into a cel phone and that might be another option. I'm looking to get into this as cheap as possible. The phone I have now I don't believe is data capable, so if I went with the phone-as-modem deal i'd also have to get another phone.
My understanding is that at&t has the "slow" data network and verizon has the faster one.
What service should I look at, and what are their pricing plans? Does at&t cut deals with exiting customers?