I want to build this tonight. I want to just make sure I am correct, so I get the rs232 male and female ends they are like 1.50 at my local electronics stor e, then just insert my rj45 cable in the proper pin conncetions. I have a free slot on my cpu so I do not need the usb adapter. Is that it or did i miss a step. If I do it this way I think then no jumper on jp1.