A family friend tested positive for HIV in 2003. Since then, he has remained healthy (thanks to strong support from family and friends, a healthy lifetstyle, and of course, God). The first thing you can do is listen. Whether they want to talk about the future, the past, their fears, it is good just to be there to share and show your support. I really want to recommend this Web site to you. It is one of the most positive, informative sources for information on living, treating, and understanding HIV/AIDS. This particular link takes you directly to stories from family and friends of those who are positive.
http://thebody.com/whatis/family_first.html