Hi Ethan, give Eden a chance. It's a pain to get it running but once you've overcome memory addressing issues it runs like a dream and significantly improves your remaining electron density map. Or if you are not that desperate yet you could run GraphEnt, helped me quite a bit - here's the link: http://utopia.duth.gr/~glykos/graphent.html Jürgen - Jürgen Bosch Johns Hopkins Bloomberg School of Public Health Biochemistry and Molecular Biology, W8708 615 North Wolfe Street Baltimore, MD 21205 Phone: +1-410-614-4742 Fax: +1-410-955-3655 http://web.me.com/bosch_lab/