Laptop CD drive broken. How can I download my new NIS CD?

Bought new 3-license NIS CD, but my laptop's CD drive had died.  I have another ordered, but I'd like to know if I can download NIS from the internet and use the Product Key that came with my CD?  I also have a netbook with no CD drive at all.  Same question.  How can I download NIS when neither of my computers have working CD drives?  Thanks in advance...