Changing username

[Black Mamba 149]

Maybe I am just dense and don't see where, but how can you change your username. The one I have was when I was an enthusiast and you couldn't put Viper in the name.
I'd like to change it to Black Mamba 149. Thanks.

 

[kcobean]

Okey doke...

 

[Black Mamba 149]

Thanks for the help