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!"
All's a HTPC like this needs it the Hauppauge HD PVR... ( avchd-usb video capture device )...and one could record all their premium HDTV
and HD Movies for permanent archiving and playback !! How sweet it is;)
Cheers, -RT