diff --git a/Stackage-Server-FAQ.md b/Stackage-Server-FAQ.md
index 2a9a56f..ba0f3ca 100644
--- a/Stackage-Server-FAQ.md
+++ b/Stackage-Server-FAQ.md
@@ -1,3 +1,18 @@
+# How do I clear my existing environment?
+
+If you already have installed some packages from Hackage or elsewhere and you want to start from a fresh package set, you can remove your `~/.ghc/<os>-<ghc-version>` directory.
+
+For example, in my directory `.ghci` I have:
+
+$ ls ~/.ghc/
+x86_64-linux-7.2.2  x86_64-linux-7.4.2  x86_64-linux-7.6.2  x86_64-linux-7.6.3  x86_64-linux-7.8.2
+
+If I want to clear my GHC 7.2.2. environment, all the user-installed packages, I can remove the directory `x86_64-linux-7.2.2`. **Be careful** that you are sure that you want to clear your package set (re-installing packages takes time!) and that you clear the right one.
+
+On Windows the `.ghc` directory might be in a directory like `C:\Documents and Settings\HaskellCurry\`.
+
+Now you can set Stackage as your `remote-repo` and run `cabal update`.
+
 # How do I use it with sandboxes?
 
 ## hsenv