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!"
I am hoping they will announce the 3820tg with ATI's HD5650 in it. For a 13" lightweight laptop it doesn't get any better than this.
http://www.notebookcheck.net/Review-Acer-Aspire-3820TG-Timeline-X-Notebook.30294.0.html