I want to retreive OptoTrak (Infrared Position Sensing Camera by NDI) real time data from LabVIEW 4.1 using CIN in Window98. I am trying to compile the CIN using Open Watcom. However, the manual only explain the way to compile the CIN using Watcom386 in window3.1 and 95. When I tried to follow the instruction anyways, I got an error message saying "cannot execute (dos4gw): no such file or directory" and "last command making (CIN.lnk) return a bad status". Please let me know if you know the way to compile the CIN or another way to retrieve real-time data from Optotrak using LabView 4.1. Thank you for your help.