I can work on an AS/400, I can work on a S/36, but when you put the two together, it gets weird. I am working on an AS/400 with an Advanced S/36 machine running under it. On the 36 side, there is a new OCL statement - // RUN400 CMD-'any OS/400 command and parameters'. My questions are: 1) Does this have to be a command file, or can I call a CL Program? 2) How do I tell the system which OS/400 library to fetch this command/program from? Thanks for your help.