You can't do it alone, but I can do it for you.
I need 3 pieces of info:
1) Your current account name,
2) the new account name you want, and
3) the email address you used to register the account (so we can verify you are the person who created it).
I suggest sending me a personal message at http://forum.shuffleit.nl/index.php?action=pm;sa=send;u=2367
with this info so your email address doesn't go public.