If you have thw win 7 dvd you can mount it with an app like powerISO. the games are on the compressed iso image. I dont have a win 7 dvd to find where right now but they are there and may run just by coping them to the desktop. It cant hurt to try.
edit: there are also several places to get them. just google win 7 backgammon. take a look here http://news.softpedia.com/news/3-New...7-105069.shtml