How do I enter the registration code?

I'm just trying to play Dragons Gate, but I can't without my an account and a password, I have my regisration code that I bought (the $20) but i don't know where to enter it. Please e-mail me at Sweetjennlo@aol.com

When you first start the program the "nag" dialog box has a "register" button, also under the Help menu select "Register MUSHclient".

Then:

1. say "Yes" to the question "have you received a registration code"
2. click "next"
3. enter the name you registered it under
4. click "next"
5. enter the registration code.
6. click "next"