I know i'll keep my exisiting #, but i also want to keep the V1 phone. Another thing, what are you talking about with sim cards? I just wanted to activate the 3G and use that as my primary phone, internet etc.. I just want to keep the V1 iPhone.If I understand you right, yes you can keep your existing phone #. If you are asking can you take the sim from the new iPhone and put it in the old phone, I don't know. You could do this with the V1 phone, but I don't know about the new phone.
Have not heard as of yet being able to reserve a phone.