diff --git a/panda/src/doc/howto.install_panda_on_windows b/panda/src/doc/howto.install_panda_on_windows
index a6b440b083..b80190c58a 100644
--- a/panda/src/doc/howto.install_panda_on_windows
+++ b/panda/src/doc/howto.install_panda_on_windows
@@ -32,6 +32,9 @@ Step 0: Map network drive to build tools drive
   - Map Network Drive V: to \\dimbo\panda
   - select reconnect drive at startup
   - if this doesnt work, you can install the build tools from CD
+  - run 'regedit V:\tabs.reg' to enable cmd.exe tab-filename-completion.  
+    You must exit and restart the cmd.exe shell to enable this, since the
+    registry is only read at cmd.exe startup.
 
 Step 1: 
   Choose whether to use Visual C++ v7.0 or v6.0