I have an Xbox LIVE account and gamertag from the (now) vintage original black Xbox days.
I don't use that Xbox any more (don't have it anymore, I think...) but I do use the same gamertag on my Windows Phone.
I want to change my gamertag name from "JarnoPeschier" to something more like the name I use online elsewhere.
When I try to do this, I get redirected to a website that tells me who to do this on my Xbox360 console for 800 points.
However: I do not have a Xbox360 console.
How can I change my gamertag...?