switching between cellphones

so i was planning on having 2 cellphones, the rokr which i have now, and the glimmer, and i was wondering if theirs n e ways to switch between the phones without having to go to us cellular. Im not worried about transfering the phone book and stuff, i just want to be able to switch which phone i use as i please

You can call or go in and add the other phone to your account. You'll have a different phone number for each phone.

Thanks,
Mindi