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 just ordered mine and my husbands today. Already have the Garmin 310 and really don't care for it. I'm anxiously awaiting something that I can do a Tri with. Hope this does the trick. My friend has it and she showed me how to set all the features through the computer...really cool! And I got mine for 25 bucks less than REI. :) Got it at www.timex-ironman.com.