Your next step is to go to the store and purchase a Windows Phone 8 powered Nokia Lumia smartphone. Once that is accomplished, you complete the registration and print the pre-paid shipping label. Mail Nokia your trade-in with the proof of purchase from your new Nokia Lumia handset and you will receive the Visa card by first class mail.
Head over to the sourcelink now to see how much Nokia will give you for your trade-in. It's the first step to take on the road to scoring that new Nokia Lumia model you've been wanting. Keep in mind that this deal is available only in the U.S.
source: Nokia (1), (2) via Engadget