Two possibilities I can think of. First, sometimes files get endings put on automatically which make them unusable... in which case you can try just getting rid of the .html and adding a .ged. The second possibility is to look at the raw data under the file. You may have to use wordpad or something like that. It may or may not give you the data you need, albeit, you may have to clean it up to make it work like a .ged.