I currently have a homemade 3 axis router running Mach3. The stepper motor drives are being controlled by the paralell port of my laptop which works OK, however I've just acuired a nice compact industrial PC with a 15" touch screen problem is it only has 2 serial ports and 1 usb (no paralell port). I was thinking of buying a "SmoothStepper" serial controller from http://www.warp9td.com/ which comes with a Plugin for Mach3, are these any good?. I've also fond this controller for "Ocean Controls" http://www.oceancontrols.com.au/KTB-190.html which is half the price but doesn't have a plugin for Mach3. Does anyone know if a plugin for the KTB-190 exists? If not Whats involved in creating one? (I have basic knowledge of VB). Any suggestion of help is greatly appreciated