Thanks for the reminder. I've been registered for over 10 years, but I just updated my address at their website.
Sigma Gamma Rho Sorority, Inc. has included the National Marrow Donor Program as one of our national programs:
http://www.sgrho1922.org/marrow.html. I actually registered during my undergrad years when the chapter at my school held a drive during their week (before I was a member). I was actually the first person registered.