diff --git a/msvc/6/appUserCollisionAlgorithm.dsp b/msvc/6/appUserCollisionAlgorithm.dsp
index b7ed1f88a..6f300da62 100644
--- a/msvc/6/appUserCollisionAlgorithm.dsp
+++ b/msvc/6/appUserCollisionAlgorithm.dsp
@@ -104,10 +104,6 @@ SOURCE="$(InputPath)"
 # PROP Default_Filter ""
 # Begin Source File
 
-SOURCE=..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.cpp
-# End Source File
-# Begin Source File
-
 SOURCE=..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.cpp
 # End Source File
 # End Group
@@ -116,10 +112,6 @@ SOURCE=..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.cpp
 # PROP Default_Filter ""
 # Begin Source File
 
-SOURCE=..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.h
-# End Source File
-# Begin Source File
-
 SOURCE=..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.h
 # End Source File
 # End Group
diff --git a/msvc/6/libbullet.dsp b/msvc/6/libbullet.dsp
index 01b61deb3..8e505dbbf 100644
--- a/msvc/6/libbullet.dsp
+++ b/msvc/6/libbullet.dsp
@@ -164,6 +164,10 @@ SOURCE=..\..\Bullet\CollisionDispatch\SimulationIslandManager.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Bullet\CollisionDispatch\UnionFind.cpp
 # End Source File
 # Begin Source File
@@ -380,6 +384,10 @@ SOURCE=..\..\Bullet\CollisionDispatch\SimulationIslandManager.h
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Bullet\CollisionDispatch\UnionFind.h
 # End Source File
 # Begin Source File
diff --git a/msvc/7/appUserCollisionAlgorithm.vcproj b/msvc/7/appUserCollisionAlgorithm.vcproj
index 486a2de70..ec66bb8f4 100644
--- a/msvc/7/appUserCollisionAlgorithm.vcproj
+++ b/msvc/7/appUserCollisionAlgorithm.vcproj
@@ -166,9 +166,6 @@
 		<Filter
 			Name="Source Files"
 			Filter="">
-			<File
-				RelativePath="..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.cpp">
-			</File>
 			<File
 				RelativePath="..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.cpp">
 			</File>
@@ -176,9 +173,6 @@
 		<Filter
 			Name="Header Files"
 			Filter="">
-			<File
-				RelativePath="..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.h">
-			</File>
 			<File
 				RelativePath="..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.h">
 			</File>
diff --git a/msvc/7/libbullet.vcproj b/msvc/7/libbullet.vcproj
index bbedf58e1..55326274d 100644
--- a/msvc/7/libbullet.vcproj
+++ b/msvc/7/libbullet.vcproj
@@ -206,6 +206,9 @@
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\SimulationIslandManager.cpp">
 			</File>
+			<File
+				RelativePath="..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.cpp">
+			</File>
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\UnionFind.cpp">
 			</File>
@@ -369,6 +372,9 @@
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\SimulationIslandManager.h">
 			</File>
+			<File
+				RelativePath="..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.h">
+			</File>
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\UnionFind.h">
 			</File>
diff --git a/msvc/71/appUserCollisionAlgorithm.vcproj b/msvc/71/appUserCollisionAlgorithm.vcproj
index 65da0c56c..8623667c5 100644
--- a/msvc/71/appUserCollisionAlgorithm.vcproj
+++ b/msvc/71/appUserCollisionAlgorithm.vcproj
@@ -166,9 +166,6 @@
 		<Filter
 			Name="Source Files"
 			Filter="">
-			<File
-				RelativePath="..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.cpp">
-			</File>
 			<File
 				RelativePath="..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.cpp">
 			</File>
@@ -176,9 +173,6 @@
 		<Filter
 			Name="Header Files"
 			Filter="">
-			<File
-				RelativePath="..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.h">
-			</File>
 			<File
 				RelativePath="..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.h">
 			</File>
diff --git a/msvc/71/libbullet.vcproj b/msvc/71/libbullet.vcproj
index 4850d45b6..d280e2274 100644
--- a/msvc/71/libbullet.vcproj
+++ b/msvc/71/libbullet.vcproj
@@ -206,6 +206,9 @@
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\SimulationIslandManager.cpp">
 			</File>
+			<File
+				RelativePath="..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.cpp">
+			</File>
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\UnionFind.cpp">
 			</File>
@@ -369,6 +372,9 @@
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\SimulationIslandManager.h">
 			</File>
+			<File
+				RelativePath="..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.h">
+			</File>
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\UnionFind.h">
 			</File>
diff --git a/msvc/8/appUserCollisionAlgorithm.vcproj b/msvc/8/appUserCollisionAlgorithm.vcproj
index 7cb2b77a7..08d4fe9e5 100644
--- a/msvc/8/appUserCollisionAlgorithm.vcproj
+++ b/msvc/8/appUserCollisionAlgorithm.vcproj
@@ -166,9 +166,6 @@
 		<Filter
 			Name="Source Files"
 			Filter="">
-			<File
-				RelativePath="..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.cpp">
-			</File>
 			<File
 				RelativePath="..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.cpp">
 			</File>
@@ -176,9 +173,6 @@
 		<Filter
 			Name="Header Files"
 			Filter="">
-			<File
-				RelativePath="..\..\Demos\UserCollisionAlgorithm\SphereSphereCollisionAlgorithm.h">
-			</File>
 			<File
 				RelativePath="..\..\Demos\UserCollisionAlgorithm\UserCollisionAlgorithm.h">
 			</File>
diff --git a/msvc/8/libbullet.vcproj b/msvc/8/libbullet.vcproj
index 25bccf739..4325cc4ce 100644
--- a/msvc/8/libbullet.vcproj
+++ b/msvc/8/libbullet.vcproj
@@ -206,6 +206,9 @@
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\SimulationIslandManager.cpp">
 			</File>
+			<File
+				RelativePath="..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.cpp">
+			</File>
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\UnionFind.cpp">
 			</File>
@@ -369,6 +372,9 @@
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\SimulationIslandManager.h">
 			</File>
+			<File
+				RelativePath="..\..\Bullet\CollisionDispatch\SphereSphereCollisionAlgorithm.h">
+			</File>
 			<File
 				RelativePath="..\..\Bullet\CollisionDispatch\UnionFind.h">
 			</File>