Setting Environment Variables on Windows

set HOME=d:\home
set DISPLAY=localhost:0
set PATH=.;d:\cygwin\bin;d:\cygwin\usr\bin;d:\cygwin\usr\local\bin;D:\cygwin\usr\X11R6\bin;d:\gs\gs8.00\bin;d:\gs\gs8.00\lib;%PATH%

1. Open Control Panel
2. Click the System icon and the window pops up (screenshot)
3. Go to the Advanced pane (screenshot)
4. Click the Environment Variables button (screenshot)
5. There are two seperated windows showing two sets of environment variables. Select the "new" button for the upper window to create a new environment variable (screenshot). Select the "Edit" button for the upper window to edit an existing environment variable. Probably you need to create the "HOME" and "DISPLAY" variable, and edit the "PATH" variable.
6. The value of "DISPLAY" should be localhost:0
7. The value of "HOME" should be the directory name where you want to put your .profile file. For example: d:\home.
8. You should add these values to the beginning of your "PATH" variable:

   .;d:\cygwin\bin;d:\cygwin\usr\bin;d:\cygwin\usr\local\bin;D:\cygwin\usr\X11R6\bin;d:\gs\gs8.00\bin;d:\gs\gs8.00\lib