diff --git a/OpenSim/Region/Framework/Interfaces/IRegionSyncModule.cs b/OpenSim/Region/Framework/Interfaces/IRegionSyncModule.cs
new file mode 100755
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+++ b/OpenSim/Region/Framework/Interfaces/IRegionSyncModule.cs
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+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+//KittyL: Added to support running script engine actor
+
+using System.Collections.Generic;
+
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.Framework.Interfaces
+{
+    public enum DSGActorTypes
+    {
+        Unknown,
+        ScenePersistence, //the Scene (data store), which is now considered as a persistence actor
+        ClientManager,
+        ScriptEngine,
+        PhysicsEngine
+    }
+
+
+
+    /////////////////////////////////////////////////////////////////////////////////////
+    //Interface for SceneGraph to call into RegionSyncModule
+    /////////////////////////////////////////////////////////////////////////////////////
+    public interface IRegionSyncModule
+    {
+        bool Active { get; } //if true, this RegionSyncModule is connected into the synchronization overlay 
+        string ActorID { get; }
+        DSGActorTypes DSGActorType { get; set; }
+        bool IsSyncRelay { get; }
+
+        //Enqueue updates for scene-objects and scene-presences
+        void QueueSceneObjectPartForUpdate(SceneObjectPart part);
+        void QueueScenePresenceForTerseUpdate(ScenePresence presence);
+
+        //void SendUpdatesToSynchronizeState(List<SceneObjectGroup> sog);
+        void SendSceneUpdates();
+        void SendTerrainUpdates(string lastUpdateActorID);
+        //void SendDeleteObject(SceneObjectGroup sog);
+
+        //TODO LIST:
+        //Special API for handling avatars
+        //void QueuePresenceForTerseUpdate(ScenePresence presence)
+        //void SendAvatarUpdates();
+
+    }
+
+    /// <summary>
+    /// Interface for invoking DSGActor specific functions or accessing members whose values depend on the actor's type.
+    /// </summary>
+    public interface IDSGActorSyncModule
+    {
+        DSGActorTypes ActorType { get; }
+        string ActorID { get; }
+    }
+
+}
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