How to get a minecraft account with my visa gift card?

I got a visa gift card for Christmas and i wanted to buy a minecraft account but i can't seem to figure out how to. Can someone help me?

Go on minecraft.net
login to your Mojang account
Click Buy now
Enter your payment infomation

Please NOTE THAT IF YOU ARE USING VISA PREPAID YOU'LL HAVE TO REGISTER YOUR ADDRESS @ www.visaprepaidcanada.com(or What it said on cardholder agreement)