The Traveling Canadian Android

Greetings gents,

Alright, I'm currently rocking an unlocked Samsung Galaxy Spica from Rogers and I'll be doing some traveling state-side in the very near future. I've been trying to look for any pre-paid plans that offer data, but so far my search is proving fruitless. However I may be mistaking pre-paid phone places with getting a new sim card.

I'm trying to avoid buying a stateside phone completely, but that looks like that may be my only option.

Any and all advice would be much appreciated.