Hi there, I just saw your question on the help list and tough you could help me with some start-up info.... I just downloaded the R project software to try running SEM analysis and I also downloaded the SEM package. But it just sits there on the desktop and R does not know where it is...I can¹t figure out how to organize the files...When I type ?sem in R it says object sem not found...I can¹t seem to find help on the web on how to set-up the packages.... Well, thanks in advance __________________ Patrick Bedard Ph.D. Dept. of Neuroscience Brown University [[alternative HTML version deleted]]