The title says it all.
No.
Nope. The name changes on all your old posts as well.
your humble TubaDiva
Administrator
Yay! Ok, I think on Monday I will submit my request for my new username. I’m fairly sure I know what I want! Does it matter to whom I e-mail the information?
No-didly-o.
Well, Lobsang can’t help you much on this score, so mail it to me, okay? TubaDiva@aol.com. 
Some people send it to more than one adminstrator on the grounds that whichever gets to it first gets it done fastest, but I’m usually around and it’s not a problem.
your humble TubaDiva
Administrator
TubaDiva, I e-mailed you on Thursday, did you get it?