Hi I had written to you a couple of minutes back. I think I was able to locate the cygx11-6.dll file. The problem was that the path has to be defined in the cygwin.bat for the XP system to locate the files while executing. I defined the following path "SET PATH=%PATH%;C:\cygwin\usr\X11R6\bin;c:\cygwin\bin" in the batch and it worked. Sorry for the trouble! Raman