Update Question

I've just purchased the Nod32 software but I am stumped with Updates.

Don't get me wrong everything works, except that I am on dynamic IP (dial-up) and thus everytime I update, I am forced to update with a different IP (same ISP). I just don't want to recieve an e-mail few weeks into my subscription telling me that my update is invalid since I had too many different IP signups.
The only way I can have the same IP if I go through a proxy but I don't feel like changeing my setup everytime I try to update.

Thank You for any help.

P.S.
After evaluating the product for a month I came to a conclusion that so far it's a stellar pieace of AV software.

P.S.S
What are the diffrences between the current NOD32 and the Version 2.0.

 

The question poped into my mind when I saw the multiple licenease option.
I know that most companies that offer this option and are username/password based ID the given connection by either IP or MAC hence was my concern.

Thank you for your answer.