How do I put my xbox 360 gamer card on a vista desktop?

I think the instructions on the xbox site is for xp.How do I put my xbox 360 gamer card on a vista desktop?Click on the site below



http://www.mygamercard.net/



after you do that enter your gamertag in the appropriate location and then click generate gamercard code.



After that click on more and follow the instruction that is displayed on the page... Contect me if u need more help..