GM Thanks to Joe K0BX, Don AA5AU and Dean N6DE who responded to my problem. I got my DXP38 working with windows XP. The solution is to add this under PORTS in INI file: Since I am using port 2 on computer (a USB to serial) it looks like this under (PORTS) COM2:=9600,n,8,1 That solved the problem. Great group here and thanks again. 73 Ken W0LSD