diff --git a/anvil-local.bat b/anvil-local.bat
new file mode 100644
index 0000000..262f282
--- /dev/null
+++ b/anvil-local.bat
@@ -0,0 +1,4 @@
+@ECHO OFF
+
+SET DIR=%~dp0
+python %DIR%\anvil\manage.py %*
diff --git a/anvil/commands/util.py b/anvil/commands/util.py
index 45e3e6a..48072ac 100644
--- a/anvil/commands/util.py
+++ b/anvil/commands/util.py
@@ -8,6 +8,7 @@ __author__ = 'benvanik@google.com (Ben Vanik)'
 
 import os
 import shutil
+import sys
 
 from anvil.cache import RuleCache, FileRuleCache
 from anvil.context import BuildEnvironment, BuildContext
@@ -63,8 +64,13 @@ def run_build(cwd, parsed_args):
   project = Project(module_resolver=module_resolver)
 
   # -j/--jobs switch to change execution mode
-  # TODO(benvanik): re-enable when multiprocessing works
   #task_executor = None
+  if parsed_args.jobs is None:
+    # Default to -j1 on Windows only.
+    # TODO(benvanik): figure out why this fails so catastrophically
+    if (sys.platform == 'cygwin' or
+        sys.platform == 'win32'):
+      parsed_args.jobs = 1
   if parsed_args.jobs == 1:
     task_executor = InProcessTaskExecutor()
   else:
diff --git a/setup-local.bat b/setup-local.bat
new file mode 100644
index 0000000..95a3c14
--- /dev/null
+++ b/setup-local.bat
@@ -0,0 +1,39 @@
+@ECHO OFF
+
+REM Copyright 2012 Google Inc. All Rights Reserved.
+REM
+REM wtf Windows setup script
+REM Sets up a local virtualenv for anvil.
+REM This places all dependencies within the anvil-build/ path such that nothing
+REM from site-packages is used. In order to make use of this consumers should
+REM invoke anvil-local.bat instead of the global 'anvil'.
+
+SET DIR=%~dp0
+
+REM Visual Studio 2010
+SET VS90COMNTOOLS=%VS100COMNTOOLS%
+REM Visual Studio 2012
+REM SET VS90COMNTOOLS=%VS110COMNTOOLS%
+
+ECHO Installing virtualenv (1.8.2)...
+
+pip install virtualenv==1.8.2
+
+ECHO Setting up the virtual environment...
+
+virtualenv %DIR%\local_virtualenv
+
+ECHO Preparing virtualenv...
+
+REM Instead of using active we need to do it manually - the Windows
+REM activate script doesn't return control back to this script when run.
+SET VIRTUAL_ENV=%DIR%\local_virtualenv
+SET PATH=%VIRTUAL_ENV%\Scripts;%PATH%
+REM %DIR%\local_virtualenv\Scripts\activate
+
+ECHO Repeatedly installing twisted, as python still doesn't support VS2010...
+FOR %%A IN (1 2 3 4 5) DO pip install twisted
+
+ECHO Installing anvil-build...
+cd %DIR%
+python setup.py develop