diff --git a/Tools/msi/merge.py b/Tools/msi/merge.py
new file mode 100644
index 0000000..aa26122
--- /dev/null
+++ b/Tools/msi/merge.py
@@ -0,0 +1,70 @@
+import msilib,os,win32com,tempfile
+PCBUILD="PCBuild"
+from config import *
+
+Win64 = "amd64" in PCBUILD
+
+mod_dir = os.path.join(os.environ["ProgramFiles"], "Common Files", "Merge Modules")
+if Win64:
+    modules = ["Microsoft_VC90_CRT_x86.msm", "policy_8_0_Microsoft_VC80_CRT_x86_x64.msm"]
+    msi = "python-%s.amd64.msi" % full_current_version
+else:
+    modules = ["Microsoft_VC90_CRT_x86.msm","policy_8_0_Microsoft_VC80_CRT_x86.msm"]
+    msi = "python-%s.msi" % full_current_version
+for i, n in enumerate(modules):
+    modules[i] = os.path.join(mod_dir, n)
+
+def merge(msi, feature, rootdir, modules):
+    cab_and_filecount = []
+    # Step 1: Merge databases, extract cabfiles
+    m = msilib.MakeMerge2()
+    m.OpenLog("merge.log")
+    print "Opened Log"
+    m.OpenDatabase(msi)
+    print "Opened DB"
+    for module in modules:
+        print module
+        m.OpenModule(module,0)
+        print "Opened Module",module
+        m.Merge(feature, rootdir)
+        print "Errors:"
+        for e in m.Errors:
+            print e.Type, e.ModuleTable, e.DatabaseTable
+            print "   Modkeys:",
+            for s in e.ModuleKeys: print s,
+            print
+            print "   DBKeys:",
+            for s in e.DatabaseKeys: print s,
+            print
+        cabname = tempfile.mktemp(suffix=".cab")
+        m.ExtractCAB(cabname)
+        cab_and_filecount.append((cabname, len(m.ModuleFiles)))
+        m.CloseModule()
+    m.CloseDatabase(True)
+    m.CloseLog()
+
+    # Step 2: Add CAB files
+    i = msilib.MakeInstaller()
+    db = i.OpenDatabase(msi, win32com.client.constants.msiOpenDatabaseModeTransact)
+
+    v = db.OpenView("SELECT LastSequence FROM Media")
+    v.Execute(None)
+    maxmedia = -1
+    while 1:
+        r = v.Fetch()
+        if not r: break
+        seq = r.IntegerData(1)
+        if seq > maxmedia:
+            maxmedia = seq
+    print "Start of Media", maxmedia
+
+    for cabname, count in cab_and_filecount:
+        stream = "merged%d" % maxmedia
+        msilib.add_data(db, "Media",
+                [(maxmedia+1, maxmedia+count, None, "#"+stream, None, None)])
+        msilib.add_stream(db, stream,  cabname)
+        os.unlink(cabname)
+        maxmedia += count
+    db.Commit()
+
+merge(msi, "SharedCRT", "TARGETDIR", modules)