Norton Internet Security - transfer to other machine

A couple of questions on which I seek advice (I can't find the answer on the FAQs).

1. Is it possible to transfer a copy of Norton Internet Security from one laptop (on which it is no longer needed) to a new one (on which is is needed)? And how do I go about it?

2. I subscribe on a third laptop to Norton Internet Security 2009 for one machine. Can I convert this to cover two machines or buy a second copy of the product at a discount? And in either case, how would I go about doing so?

Thanks.