Cool ..cnvgrib.exe works...no more simulating linux on Windows..I had to put cnvgrib in a separate directory though with all the required dll's...works better... I am using the .dlls from grads win32 v1.901 to run cnvgrib.. Afterwards I just copy the file to the old win32e grads version (grads-1.8sl11- win32e.exe) (winxp+win2000) marck