Assuming you are on the unlimited package and you have a card registered on the account (they can't take it via direct debit)
then yes after the account is activated.
However you may be able to do it in advance by phoning in - I don't know but it is worth a try
I think you will get a new IP address from the fixed IP address pool
Edited to correct error
Edited by Oldjim (Sat 19-Jan-13 13:47:00)