Recently an uncle has passed on some old PAF files to me containing ancestry history for my family. The file has not been modified since my Grandpa passed in 2002 and no one has been able to open it since then. I am currently running Windows 7 and also have another computer with OS X. What program do I need to download to view the contents of the file? I have tried searching google for this, but I have not had any luck. Many thanks in advance for any help.