Prepend to PATH variable (Windows)

Typing PATH /? in a cmd window gives me this:

[...] Including %PATH% in the new path setting causes the old path to be appended to the new setting.

In my case (Belgian environment) I can use this command:

set path c:\users;%path%

and c:\users is prepended to the existing path

Take care to use the correct list separator (I have to use ';')