Here is a link to the National MS Society page which specifically talks about genetics and MS:
Lynn...if you already have a daughter it's a little late to be worried about "passing it on" to her. If indeed there is a genetic link, you may well have already passed it on to her -- in the womb, in your eggs, before she was actually conceived. It's not like -- you have MS, and somehow she'll "catch" it from you. She may have a genetic predisposition for it...or not. The scientific evidence isn't entirely clear, and I've seen several different studies that suggest that there is more likely a genetic influence for all autoimmune diseases, not only MS. That is to say, it appears that autoimmune diseases "run" in families -- as you already noted, several of them occur in your family (and in mine). But for everyone like us where there are people in our families with autoimmune diseases, there are lots of others who only can identify themselves with MS, and no one else in the family seems to have anything related.