User name , password to log in to your account. Then the information on the cards / receivers your replacing with the new smart cards. Nothing to worry about this info is the same you've already provided as the account owner previously. That is if you are the account owner, the only people that need be concerned are those that aren't. Not a big deal at all for those not in this situation (LOL). Hope you get it straightened out as the instructions say all cards must be inserted prior to activating the new smart card(s) " step 4 in the instructions. Good luck reidw, if this is your situation. But, a little pre planning would probably accomplish this also.