This may be a dumb question, but will the N900 work with a pre-paid SIM card from t-mobile? I'm assuming that it will, but I'd like to know for sure.

I've never had a cell phone contract and don't really want one. Right now I have an N810 and a cheapo cell phone using prepaid t-mobile. I'd like to consolidate devices with the N900. I figure that I can get web access through wifi hotspots when needed and make cellular phone calls using my existing prepaid minutes from t-mobile.