Possible Duplicate:
How To Add Custom Form Fields To The User Profile Page?
I want to change a the names of some of the fields in the edit profile page in the backend. For instance, instead of it saying "Twitter", I want it to display "Enter Twitter ID".
I am aware that I can do this by editing the core WP files, but to avoid redoing the same process, how can I do this through the function.php file? What code can I enter that would make this possible?