not seeing the djgpp.env

from David Wesoloskie (
I ahve been attempting to program the first simple program in the book learning to program in C++ but I am getting an error when I try to run the program... It seemds that when I write the program in rhide it comes back with the message: error in djgpp installation; environment variable djgpp point to file c\djgpp\djgpp.env; which does not exist