[FREE] Automatic avatars

[Grim Line]

I'm after some kind of mod or little trick to be able to add automatic avatars to my website. When a user signs up using their gamertag as their username i want a link to be added to their avatar URL getting the xbox live avatar straight to their profile. The users will be signing up with their gamertags anyway so would a code such as;

http://avatar.xboxlive.com/avatar/{username}/avatarpic-s.png work?

SMF 2.0RC3

All users will have this feature automatically added but can be fully changable by all users if needed.