diff --git a/tools-hardened/desktop/README b/tools-hardened/desktop/README
index fa8526f1..139124a6 100644
--- a/tools-hardened/desktop/README
+++ b/tools-hardened/desktop/README
@@ -19,10 +19,21 @@ Then apply the patch:
 * rm -f drivers/block/loop.c include/linux/loop.h
 * patch -p1 < loop-AES-kernel.patch
 
+Stage 3 tarball:
+================
+TinHat relies on a stage 3 tarball as it's seed to begin the chroot.
+By default, it expects to see the tarball in:
+"/var/tmp/catalyst/builds/hardened/amd64/stage3-amd64-hardened-latest.tar.bz2"
+You can however inform TinHat of your own location of choice by passing it
+as an environment variable: "STAGE3".
+
 To run:
 =======
+ex.) STAGE3="/ministry/of/silly/walks/evil-rabbit.tar.bz2" ./<DM>-run.sh
 
-Execute ./<DM>-run.sh
+or without the STAGE3 environment variable.
+
+ex.) ./<DM-run.sh
 
 Where <DM> is a desktop manager of three flavors of choice: