To be recognized as the estate administrator, you must file the petition for grant of letters of administration with the Register of Wills. Our office hours are Monday through Friday, 8 a.m.The required forms you need to file with the Register of Wills will depend on if the decedent died with or without a will. A personal representative is required to send a Notice of Estate Administration to certain people within three months of a grant of Letters. Here are the first steps to get started on after you are appointed personal representative: 1. DECEDENTS, ESTATES AND FIDUCIARIES. Chapter. 1. Orphans' Court Forms. Probate allows the executor to obtain legal authority over the decedent's estate. Property, moves out, or dies. The Will is registered with the Register of Wills of the county that the deceased was a resident.