Take a look at 15 USC §1129, at
http://www4.law.cornell.edu/uscode/15/1129.html, and Paul Wright v. Domain Source, Inc., 2002 U.S. Dist. LEXIS 16024, 02-C-2525 (N.D. Cal. Aug. 28, 2002) at
http://www.lextext.com/5109579_14.pdf
The situation is different is the domain name is just a first name, rather than a full personal name. But there are plenty of cases involving personal names and several posters on this board can speak further on this topic.