> However, if it *can* be done, I'm sure you could think > of a way Jinx. ;-) Well, that's right neighbourly of you to say so ;-) I've been looking at a 56k PC on one side of the PIC network and Pacnet connection for the data on the other and could go as high as 128kB/sec with that. The overall concept of what I need to do is not complicated (ie looks simple enough on paper !! ha !!) but the timing and prioritising issues could get very involved, as each PIC has to have dual UART functions -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.