C2C has some excellent info about identifying and addressing issues of mold in the Webinar Archives . It is my limited understanding that active mold should be frozen (depending on the artifact), and inactive mold can possibly be vacuumed with a HEPA unit … professional advice is available from the links below. Hope this helps.
http://www.artcons.udel.edu/masters Univ Deleware Photo Conservation
http://www.si.edu/mci/index.html# Smithsonian Conservation Department