This and many other personal options are available in your "User CP"
http://www.eccie.net/usercp.php? Link is located on the far hand left side of the page near the top.
Avatars, Signature lines, email and password changes and much more. Please check it out.
When changing your email address, be sure you enter it correctly and have access to the new email account as the system will email you there to confirm the change. You must respond to a link in that email or you will get locked out. Also be aware that that email ends up in Spam folders frequently.
Here are some shortcuts:
Change password & email -
http://www.eccie.net/profile.php?do=editpassword
Change avatar -
http://www.eccie.net/profile.php?do=editavatar
Change signature -
http://www.eccie.net/profile.php?do=editsignature
Edit details such as location, hobbies, occupation, text under avatar -
http://www.eccie.net/profile.php?do=editprofile