I'm still trying to figure out what the S1, S2 & S4 are. Does anyone have a history/pictures of the "S" series on a web page anywhere out there? If not, Lets build one! JM From: "Psychos 'R Us" <honge@creighton.edu> I know the existence of S1, S2, and S4 (now S6). But what is a S5??