diff -r 39846999f521 CMake/vtkThirdParty.cmake
--- a/CMake/vtkThirdParty.cmake	Wed Nov 23 19:06:30 2011 +1100
+++ b/CMake/vtkThirdParty.cmake	Wed Nov 23 19:10:41 2011 +1100
@@ -3,11 +3,11 @@
   OPTION(VTK_USE_SYSTEM_${upper} "Use the system's ${lower} library." OFF)
   MARK_AS_ADVANCED(VTK_USE_SYSTEM_${upper})
   IF(VTK_USE_SYSTEM_${upper})
-    IF(EXISTS ${CMAKE_ROOT}/Modules/Find${upper}.cmake)
-      INCLUDE(${CMAKE_ROOT}/Modules/Find${upper}.cmake)
-    ELSE(EXISTS ${CMAKE_ROOT}/Modules/Find${upper}.cmake)
-      INCLUDE(${VTK_CMAKE_DIR}/Find${upper}.cmake)
-    ENDIF(EXISTS ${CMAKE_ROOT}/Modules/Find${upper}.cmake)
+    IF(EXISTS ${VTK_CMAKE_DIR}/Find${upper}.cmake)
+      INCLUDE(${VTK_CMAKE_DIR}/Find${upper}.cmake)
+    ELSE(EXISTS ${VTK_CMAKE_DIR}/Find${upper}.cmake)
+      INCLUDE(${CMAKE_ROOT}/Modules/Find${upper}.cmake)
+    ENDIF(EXISTS ${VTK_CMAKE_DIR}/Find${upper}.cmake)
     MARK_AS_ADVANCED(${upper}_INCLUDE_DIR ${upper}_LIBRARY)
     IF(${upper}_FOUND)
       SET(VTK_${upper}_LIBRARIES ${${upper}_LIBRARIES})