In windows 7 there is a new Reg call that we need to...

sandbox/src/registry_interception.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sandbox/src/nt_internals.h"
 #include "sandbox/src/sandbox_types.h"
 
 #ifndef SANDBOX_SRC_REGISTRY_INTERCEPTION_H__
 #define SANDBOX_SRC_REGISTRY_INTERCEPTION_H__
 
 namespace sandbox {
 
 extern "C" {
 
 // Interception of NtCreateKey on the child process.
 // It should never be called directly
 SANDBOX_INTERCEPT NTSTATUS WINAPI TargetNtCreateKey(
     NtCreateKeyFunction orig_CreateKey, PHANDLE key, ACCESS_MASK desired_access,
     POBJECT_ATTRIBUTES object_attributes, ULONG title_index,
     PUNICODE_STRING class_name, ULONG create_options, PULONG disposition);
 
 // Interception of NtOpenKey on the child process.
 // It should never be called directly
 SANDBOX_INTERCEPT NTSTATUS WINAPI TargetNtOpenKey(
     NtOpenKeyFunction orig_OpenKey, PHANDLE key, ACCESS_MASK desired_access,
     POBJECT_ATTRIBUTES object_attributes);
 
+// Interception of NtOpenKeyEx on the child process.
+// It should never be called directly
+SANDBOX_INTERCEPT NTSTATUS WINAPI TargetNtOpenKeyEx(
+    NtOpenKeyExFunction orig_OpenKeyEx, PHANDLE key, ACCESS_MASK desired_access,
+    POBJECT_ATTRIBUTES object_attributes, DWORD unknown);
+
 }  // extern "C"
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_SRC_REGISTRY_INTERCEPTION_H__