To change your YWN/Coffee Room password to whatever you like (instead of using the long randomly generated password issued at the time you established your account):
On top of the Coffee Room page:
At “Welcome, MyScreenName” – click on your screen name
click “Edit”
enter the new password you would like
click “Update Profile”
You can use the above instructions to change the e-mail address (which can be used for password recovery) your account is registered with as well.