How do I change Display Name?

How do I change my Display Name in my link of ';profiles.yahoo.com';? Like I can see my name and last name and I can see my Display Name, but every time I try to change it and input the code to see if ';im not a robot spammer'; it says unable. How come???? im talking about the basics section in my profileHow do I change Display Name?
WHEN I EDIT MY PROFILE IT WILL NOT LET ME SAVE THE CHANGES

1. Close all browser windows and then open a new one for each browser you use. Now clear your browsers cache (include temp files, cookies, and history). If you do not know how then read this article:

http://www.wikihow.com/Clear-Your-Browse



2. Now close this window. Open a new browser window and try to sign into your profile again. Sign into your Yahoo! Profile here: http://profiles.yahoo.com/ . Be sure to use the same browser that you cleared the cache on. Try to edit your Display Name again.



3. If you still cannot save your changes then try on an alternative browser such as Firefox. After following the steps to clear the temp files, cookies and history of course. It always good to have an alternate browser so that you can check to see if certain problems are browser specific or if something goes wrong with one browser. Here is the link to Firefox: http://www.mozilla.com/en-US/firefox/ie.



4. If nothing works then contact Yahoo About this problem. This is the Customer Care help link for Yahoo Profiles: http://help.yahoo.com/l/us/yahoo/profile

At the very bottom of the page is the link to the Yahoo! Profiles Help Form. Click that and sign in to use the form. Tell yahoo about your problem. Maybe they will have a solution.How do I change Display Name?
id like to know to
i dont think you can plz answer mine

http://answers.yahoo.com/question/index;_ylt=AhOCXqSAjQCYCRXR7f4jN2jsy6IX;_ylv=3?qid=20090817221542AAr5yUr
click on 'My Profile' you will find at the right side of your screen.

Next,click on 'Edit profile info'

And you can change your display name.

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