You have to have the appropriate plan though or your activation will fail.
Don't forget to turn your old phone off and dial *228 on the droid for activation.
Adil
Yeah you have to make sure you have to nice expensive plan for data use to activate the Droid. As long as you already have that plan you can do it all online by logging in to your account. If you have questions then it might be easier to just call them and do it that way.