Let the hive mind of Engadget get that for you.
"As someone who doesn't reside in the USA, I was wondering what would be the best way to get internet for my computer in the US for a couple of weeks? If it were Europe I know I'd look for some prepaid data. Is there anything similar offered by American carriers? A MiFi or a data SIM that I can tether from would work, but I'm trying to maintain a tight budget. Help!"
The globalstar service is phenomenal for US and the Caribbean.
http://www.highspeedsat.com/gsp1700.htm
Other than that, I would recommend the Iridium phones. http://www.highspeedsat.com/iridium-phone.htm
Yes, the GSP-1700 is a new, sleek satellite phone, (I just tested one and did not see anything about the EV-DO on the phone) and I am sure it will go over very well. http://www.highspeedsat.com