Um..hello..You changed the WRONG one in Your Account index.php
new_user NOT new user
Look further.
As for your other problem with changing the link in the Forums. Try changing it to this
Code:
'U_REGISTER' => ('modules.php?name=Your_Account&op=new_user'),
I just took out the
append sid.
Make sure you are backing up your files when you edit them.
mikem