diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..925c446
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+
+*.suo
+CompareFS/bin
+CompareFS/obj
\ No newline at end of file
diff --git a/CompareFS.sln b/CompareFS.sln
new file mode 100644
index 0000000..4deba3c
--- /dev/null
+++ b/CompareFS.sln
@@ -0,0 +1,20 @@
+
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CompareFS", "CompareFS/CompareFS.csproj", "{8CEDDAC5-C9DB-4129-BE95-BFBFF7F0CCB9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8CEDDAC5-C9DB-4129-BE95-BFBFF7F0CCB9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8CEDDAC5-C9DB-4129-BE95-BFBFF7F0CCB9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8CEDDAC5-C9DB-4129-BE95-BFBFF7F0CCB9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8CEDDAC5-C9DB-4129-BE95-BFBFF7F0CCB9}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/CompareFS/CompareFS.csproj b/CompareFS/CompareFS.csproj
new file mode 100644
index 0000000..522bfb8
--- /dev/null
+++ b/CompareFS/CompareFS.csproj
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{8CEDDAC5-C9DB-4129-BE95-BFBFF7F0CCB9}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>CompareFS</RootNamespace>
+    <AssemblyName>CompareFS</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="FileModification.cs" />
+    <Compile Include="ModificationType.cs" />
+    <Compile Include="PathModification.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/CompareFS/FileModification.cs b/CompareFS/FileModification.cs
new file mode 100644
index 0000000..39a8d63
--- /dev/null
+++ b/CompareFS/FileModification.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.IO;
+
+namespace CompareFS
+{
+    class FileModification : PathModification
+    {
+        public override string Path
+        {
+            get { return FileInfo.FullName; }
+        }
+
+        public FileInfo FileInfo { get; private set; }
+    }
+}
diff --git a/CompareFS/ModificationType.cs b/CompareFS/ModificationType.cs
new file mode 100644
index 0000000..30e9fcf
--- /dev/null
+++ b/CompareFS/ModificationType.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace CompareFS
+{
+    enum ModificationType
+    {
+        None,
+        Added,
+        Removed,
+        Changed
+    }
+}
diff --git a/CompareFS/PathModification.cs b/CompareFS/PathModification.cs
new file mode 100644
index 0000000..12514d3
--- /dev/null
+++ b/CompareFS/PathModification.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace CompareFS
+{
+    abstract class PathModification
+    {
+        public abstract string Path { get; }
+    }
+}
diff --git a/CompareFS/Properties/AssemblyInfo.cs b/CompareFS/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..42bd7fb
--- /dev/null
+++ b/CompareFS/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("CompareFS")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("CompareFS")]
+[assembly: AssemblyCopyright("Copyright ©  2011")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("fb4385aa-e0c1-4b69-86d8-08a39836e68d")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]