Sorry in advance for being a wee bit off-topic; this is more of a general genealogy question. A relative sent me her "family file", but it has no suffix and I cannot make out which kind of file it is. I have tried various suffixes, but none makes it possible to open the file. I sent it back to her so she could tell me what kind of file it is, but she cannot open it either. She lost - all - her data due to a virus from aol. She is on a pc. I am on a Mac. Is there a way to make out which kind of file it is? Thanks. Paul