I was acting acting as moderator for our yahoo group but my email was hacked.. Now I am the one unable to open?

our group email. Is it still possible to continue using another pword or can I use my new email address? Please help me. I have reported this already and I am awaiting your answer. Our email group is UERM70@yahoogroups.com. It has been in existence since 2001 or 2002. Thanks.