Alright, so my B.net name linked to my gamertag Noxiw is NoxiwKcin, and it reallllly annoys me. Is there a way to change what profile your gamertag is linked to?
Hmmmm. Poop. Yoyo, you were supposed to be like: "yeah! click this, click that, go here, click this. BAM! That's how you change your name on b.net." Sadface.
I recently looked into this in preparation for Halo Reach. My current B.net username is... Masterchief866. I had just signed up for XBL and (impulsively) chose a Bungie username. B.net accounts are associated with Live accounts. Display names cannot be changed, nor can the accounts be unassociated. The only workaround would be for you to create an entirely new Live account and connect it with an entirely new B.net account. Hey, at least your name isn't Masterchief866.
You can change it by making a new Live account, but in most cases, people don't really like that answer, so yeah. That's actually pretty hilarious, man.