I believe that users can change their display name in the account settings/profile section.
However... please DO NOT use the "report to moderator" feature to attempt to raise the priority of your question. That is not what the report is intended for.
ALSO.... you posted in a thread with questions about SABERS... there is a WHOLE BOARD dedicated to site issues and questions with the site.
I really suggest that you try looking around and finding the correct location next time...