Hi, I have a javascript application that I use to debug hardware at my job, and its user interface is a command line in a (WindowsXP) dos window. This is kind of crude (e.g. to read a memory location you have to type something like "gfcb.readx(0xcf001234)") so I would very much like to design a visual Basic app that would sit "on top" of the javascript app - interpret mouse clicks, pass commands to the javascript app, and display the output of the javascript app. I can't modify the javascript app itself, so the VB app would have to mimic a user typing away in a dos window. Can a VB program communicate with an existing command-line application in this way? Sorry if this is a dumb question... I'm just a hardware guy... Thanks! Chris