diff --git a/GDE_3_2008/GDE_3.vcxproj b/GDE_3_2008/GDE_3.vcxproj
index 4939d23..635bb71 100644
--- a/GDE_3_2008/GDE_3.vcxproj
+++ b/GDE_3_2008/GDE_3.vcxproj
@@ -28,6 +28,7 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>Static</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -62,7 +63,7 @@
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <TreatWChar_tAsBuiltInType>true</TreatWChar_tAsBuiltInType>
-      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
     </ClCompile>
@@ -112,11 +113,16 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\Hazard\Hazard\Cell.cpp" />
+    <ClCompile Include="..\Hazard\Hazard\CellCollection.cpp" />
     <ClCompile Include="..\Hazard\Hazard\CParser.cpp" />
     <ClCompile Include="..\Hazard\Hazard\Hazard.cpp" />
     <ClCompile Include="..\Hazard\Hazard\KV.cpp" />
     <ClCompile Include="..\Hazard\Hazard\PrimImplikant.cpp" />
     <ClCompile Include="..\Hazard\Hazard\PrimImplikantCollection.cpp" />
+    <ClCompile Include="..\Hazard\Hazard\stdafx.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</ExcludedFromBuild>
+    </ClCompile>
     <ClCompile Include="..\Hazard\Hazard\Wertetabelle.cpp" />
     <ClCompile Include="GDE_3.cpp" />
     <ClCompile Include="GDE_3Doc.cpp" />
@@ -130,6 +136,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\Hazard\Hazard\Cell.h" />
+    <ClInclude Include="..\Hazard\Hazard\CellCollection.h" />
     <ClInclude Include="..\Hazard\Hazard\CParser.h" />
     <ClInclude Include="..\Hazard\Hazard\KV.h" />
     <ClInclude Include="..\Hazard\Hazard\PrimImplikant.h" />
diff --git a/GDE_3_2008/GDE_3.vcxproj.filters b/GDE_3_2008/GDE_3.vcxproj.filters
index 14ee619..7b85aa1 100644
--- a/GDE_3_2008/GDE_3.vcxproj.filters
+++ b/GDE_3_2008/GDE_3.vcxproj.filters
@@ -69,6 +69,12 @@
     <ClCompile Include="..\Hazard\Hazard\KV.cpp">
       <Filter>Quelldateien</Filter>
     </ClCompile>
+    <ClCompile Include="..\Hazard\Hazard\CellCollection.cpp">
+      <Filter>Quelldateien</Filter>
+    </ClCompile>
+    <ClCompile Include="..\Hazard\Hazard\stdafx.cpp">
+      <Filter>Quelldateien</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="GDE_3.h">
@@ -131,6 +137,9 @@
     <ClInclude Include="..\Hazard\Hazard\KV.h">
       <Filter>Headerdateien</Filter>
     </ClInclude>
+    <ClInclude Include="..\Hazard\Hazard\CellCollection.h">
+      <Filter>Headerdateien</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="res\GDE_3.ico">