diff --git a/runtime/doc/os_dos.txt b/runtime/doc/os_dos.txt
index bc883c8..925c7e0 100644
--- a/runtime/doc/os_dos.txt
+++ b/runtime/doc/os_dos.txt
@@ -52,12 +52,18 @@
 
 See |$VIM| and |$VIMRUNTIME| for more information.
 
-Under Windows 95, you can set $VIM in your C:\autoexec.bat file.  For
-example: >
-  set VIM=D:\vim
-Under Windows NT, you can set environment variables for each user separately
-under "Start/Settings/Control Panel->System", or through the properties in the
-menu of "My Computer", under the Environment Tab.
+You can set environment variables for each user separately through the
+System Properties dialog box.  The steps to do that:
+1. Type Windows Key + R to open the "Run" dialog box.
+2. Enter "sysdm.cpl" and press the "OK" button.  The "System Properties"
+   dialog box will open.
+3. Select the "Advanced" tab and press the "Environment Variables..." button.
+   The "Environment Variables" dialog box will open.
+4. Select an existing variable in the "User variables" list and press the
+   "Edit..." button to edit it.  Or press the "New..." button to add a new
+   variable.
+5. After you finished editing variables, press the "OK" button to save the
+   changes.
 
 ==============================================================================
 2. Using backslashes					*dos-backslash*