I also use Family TreeMaker. But you basically have to either enter a profile (person) by hand (often cut and paste from FTM or upload a GED (which don't work real well and means you need to go to each profile created and clean it up (or force other people to clean it up later. I like doing it by hand since it gives me an opportunity to go through and clean up my existing tree and add whatever I can find new. Of course I haven't transferred all my sources yet, but one of these days....