How do I run JBMS as a service on Windows

versions: 1.0M3, 1.0M4

JBoss Mail Server is architected as a set of services for JBoss Application Server.  JBMS/JBAS are both pure Java applications.  You do it the same way you do any other Java application.  There are instructions for JBAS which should work for JBMS here.