Go to your local DMV with the Bill of Sale and find out from them what you need to do. If the estate sale was a licensed auctioneer I think they would be obligated to provide clear title to the property.
1953 Chevrolet 3600 Fried Green T'mater (Vern) In the Stovebolt Gallery Caution: Political Statement Man who runs in front of car gets tired, man who runs behind car gets exhausted.