Problem using JSP page as part of shell


I want to use JSP files for the header and footer parts of a shell that I am creating but the “JSP Page” option is not visible for any of the 5 sections of the shell. According to the portal design doc for portal 6.5.1, "JSP Page’ is supposed to be an option when specifying the 5 parts (header,footer,nav bar, side menu, tilte bar) of a shell. So where on earth is this option?? If I don’t have this option then I’ll have to create and deploy a whole portlet just for one little JSP page, so that I can access it via the “Portal Page” option (which is the only other option I have apart from “Inherit”). Anyone have any ideas?