If they are in a community tank, not much can be done as the fry will be eaten before you can do anything. There is a chance to rescue them before that though.
Caring for clown fry is tricky and time consuming, but not difficult once you know what you are doing. They require special foods and good care.
If you are serious about wanting to keep them alive, then check out a book entitled Clownfishes by Joyce Wilkerson. That will give you information on how to do everyting. A how-to guide is a little more involved than what can be posted here.
Either way, having breeding clowns is a sign of a happy and healthy tank! Congrrats on that!