years ago when yahoo had a major upgrade, ID could be changed then. mine was changed since I don't think you could change it nowadays. try a new account
http://answers.yahoo.com.au/question/index?qid=20061203...
change your password asap if it is hacked after checking out your mails sign out completely! You cannot delete your yahoo id but it will be deactivated if it is not used for long time..you can write to customer care regarding your problem .
http://in.answers.yahoo.com/question/index?qid=20080913...
You can ignore your account for at least 4 months and it will automatically be deleted for inactivity, or you can go about deleting it yourself. When you terminate your account, you permanently lose all saved data and Yahoo site access asso...
http://in.answers.yahoo.com/question/index?qid=20090125...
Sign into the ID on the yahoo webpage, and it should say My Account right up underneath it like it will say sign out. Go to your account and delete it. If you can't find it simply go to help and type in "deleting account" and it w...
http://answers.yahoo.com/question/index?qid=10060516307...
To delete one of your profiles, go to My Profiles and click the "Delete" link to the right of the appropriate profile name. It is not possible to delete the profile associated with your main Yahoo! ID on the My Profiles page. Prof...
http://ph.answers.yahoo.com/question/index?qid=20080207...
If you or user know of original account profile, those details may still be active, as though you forgot password, or though password was changed, you can email yourself the username to original email, when account was created, and re-enter...
http://answers.yahoo.com/question/index?qid=20091208092...
First, make very sure that is what you want to do, if you delete the account you can never get it back, or use that ID name, either. Any other yahoo programs associated with your mail account will also be deleted. If you are sure: Click on ...
http://answers.yahoo.com/question/index?qid=20091120055...