Reba,
I believe you have to create a new profile, and just use a different e-mail address. Mine's boring to me too, I wasn't feeling very creative when I joined, but I've just never bothered changing it. What will you use?
Brandi
I did this after the road trip b/c my screen name was my dog's name, so when I was on the road trip I was going nuts listening to everyone call me Maximus.........
Anyway, I just re-registered (yeah, you'll lose your post count but WTH). You have to either change the email in your current account or use a different email addy in the new account.
And a word of advice--try to use something w/your real first name in case you ever go on one of Cathe's road trips.