Having durable POA is what you are going to need very soon. You should be able to contact an attorney and get it done. You need POA for both parents. If there isn't a will (legal and binding) get that done promptly. Wills will stipulate who is their personal representative. You want to avoid an estate going into probate; messy and expensive. A good attorney can help set up reciprocal revocable trusts so that parents interests can be preserved and the tax man gets little.