diff --git a/CSharpTranslator/antlr3/src/cs2j/Utils/Set.cs b/CSharpTranslator/antlr3/src/cs2j/Utils/Set.cs
new file mode 100644
index 0000000..ded0857
--- /dev/null
+++ b/CSharpTranslator/antlr3/src/cs2j/Utils/Set.cs
@@ -0,0 +1,67 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace RusticiSoftware.Translator.Utils
+{
+    public class Set<T> : IEnumerable
+    {
+
+        /// 
+        /// Provides the storage for elements in the Set, stored as the key-set
+        /// of a Dictionary object.    
+        /// 
+        protected Dictionary<T, object> setD = null;
+        private readonly static object PlaceholderObject = new object();
+
+        public Set()
+        {
+            setD = new Dictionary<T,object>();
+        }
+        
+        
+        public IEnumerator GetEnumerator()
+        {
+            return setD.Keys.GetEnumerator();
+        }     
+
+
+        /// 
+        /// The placeholder object used as the value for the Dictionary object.
+        /// 
+        /// There is a single instance of this object globally, used for all Sets.
+        /// 
+        protected object Placeholder
+        {
+            get { return PlaceholderObject; }
+        }
+
+
+        ///
+        /// Adds the specified element to this set if it is not already present.
+        /// o: The object to add to the set.
+        /// returns true if the object was added, false if it was already present.
+        public bool Add(T s)
+        {
+            if (setD.ContainsKey(s))
+                return false;
+            else
+            {
+                //The object we are adding is just a placeholder.  The thing we are
+                //really concerned with is 'o', the key.
+                setD[s] = PlaceholderObject;
+                return true;
+            }
+        }
+
+        public T[] AsArray()
+        {
+            ICollection keys = setD.Keys;
+            T[] retArr = new T[keys.Count];
+
+            keys.CopyTo(retArr, 0);
+
+            return retArr;
+        }
+    }
+}
diff --git a/CSharpTranslator/antlr3/src/cs2j/cs2j.csproj b/CSharpTranslator/antlr3/src/cs2j/cs2j.csproj
index 5b77611..86e6dcf 100644
--- a/CSharpTranslator/antlr3/src/cs2j/cs2j.csproj
+++ b/CSharpTranslator/antlr3/src/cs2j/cs2j.csproj
@@ -39,7 +39,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
-    <Commandlineparameters> -translator-timestamp-files=false -translator-keep-parens=false -netdir=/Users/keving/gitrepos/cs2j/CS2JLibrary/NetFramework/ -dumpxmls -xmldir=/Users/keving/tmp/xml/se -odir=/Users/keving/tmp/java/se/src /Users/keving/svnrepos/ScormEngineNet/src/app/ScormEngine.Core/Logic/Integration/ExternalId.cs</Commandlineparameters>
+    <Commandlineparameters> -translator-timestamp-files=false -translator-keep-parens=false -netdir=/Users/keving/gitrepos/cs2j/CS2JLibrary/NetFramework/ -dumpxmls -xmldir=/Users/keving/tmp/xml/se -odir=/Users/keving/tmp/java/se/src /Users/keving/svnrepos/ScormEngineNet/src/app/ScormEngine.Core/Logic/Integration/ExternalConfiguration.cs</Commandlineparameters>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -70,6 +70,7 @@
     <Compile Include="CSharp\JavaPrettyPrint.cs" />
     <Compile Include="CSharp\NetMaker.cs" />
     <Compile Include="CSharp\Templates.cs" />
+    <Compile Include="Utils\Set.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="CSharp\csCrawl.g" />