> > So far, I know only the command >>>sys.path.append(r'c:....etc...'), but how > to delete or insert at the beginning of the list, I know not. > You can delete a slice. For example, del sys.path[2:5] More about slicing: http://docs.python.org/ref/slicings.html sys.path is a regular list. List methods: http://docs.python.org/tut/node7.html Best, Laszlo