The easiest SCORM assembler to use is the set of tools from RELOAD. RELOAD Project
I have to say that creating the SCORM compliant material is the easy bit. The material you are going to work with may consist of several html pages a navigation system a quiz and resources. All SCORM does is tell your VLE where all the bits are. a typical course would be a 'web site' including linked files and a quiz. The result of the quiz is passed to the VLE plus the fact the student took the course. I beleive that SCORM 2004 comes in two flavours
