Can I work with Yahoo legal department to fix a slanderous error?

I am a very resent member of the CFSFM Experimental yahoo group. I am a somewhat famous person, in several fields, who has been falsely accused of not having had Chronic Fatigue Syndrome, and consequently barred from posting my personal experience. I have years of ongoing medical doentation of my former CFS diagnosis, the legal voracity of which had to be valid in a court of law. In addition to this, the CFSFM group moderator agreed with the person who stated I was a fraud perpetuating a scam by barring further posts from me. I wish to work with the yahoo legal department to re-establish my credibility, and that of my website, and to procure an apology as public as the slander I have endured. For more information on me, I refer you to the April, 2008, issue of Vanity Fair article on the New York Times Best Seller book, Girls Like Us, by Sheila Weller, in which I was extensively quoted in ociation with my personal friendship with Joni Mitchell. One can also Google my real name Estrella Berosini, and my life long nick name, Estra Berosini.