Thanks for your reply. And sorry for providing too little information. I'm new to perl as well for SOPW so forgive my mistakes. Coming to the point. The error message which i get is an warning like "use of uninitialised value in some place..." So i concluded that the arguments were not passed. The path variables were "c:\perl\bin" and "c:\Tcl\bin" I was not pretty sure about copying directory tree, but my Lead told me that when perl is installed using active perl it too does the same thing except that it modifies the registry for file type association. Which i too did using Assoc and ftype commands in DOS cmd prompt.