Forum/Username

I'm not sure if any mods of the website are here on the forums much, but I connected to Day9.tv through facebook for it to be easier to log in, but I would like my username to not be my name.  I don't mind having my name shown in my profile, but I wish my usual forum/username that I have for most forums to be as my forum/username.  Normally it'll ask you to type in a username even if you connect through facebook on most websites, but here it just decided to use my name.

If not, no worries, but no harm in asking.