This free program will help you create the affidavit that you will need to file in Surrogate's Court. Reach out for a free legal consultation with a knowledgeable Long Island estate administration lawyer.Generally, if you have bad credit, you will NOT be allowed to act as the administrator of the estate of parent or loved one. You will need account numbers and serial numbers of assets. Complete the Check-O-Matic service form and submit it to the Nassau Service Center. Visit Service Forms to download the appropriate form. Estate accounts at credit unions can be tricky. In order to join, the primary account holder has to fall into a field of membership. Beneficiaries of an Estate Can Help the Estate Planning. A good estate plan requires the selection of beneficiaries and contingent beneficiaries.