The deceased lawyer asked me if I would become the administrator of my ex's will! Do I need my own lawyer to except and sign documents

Yes, you should hire your own attorney because "signing-up" to be an executor is an enormous task with high risk.  You should get proper advice before agreeing to accept the appointment.  Of course, as the ex-spouse, there are extra steps you will have to meet before becoming eligible to be appointed. I would be happy to answer your questions, if you want to call me. Please visit our website at: www.spencerlawpc.com Kevin Spencer (214) 965-9999