Index: /OpenSceneGraph/trunk/applications/present3D/CMakeLists.txt
===================================================================
--- /OpenSceneGraph/trunk/applications/present3D/CMakeLists.txt (revision 10124)
+++ /OpenSceneGraph/trunk/applications/present3D/CMakeLists.txt (revision 10127)
@@ -54,3 +54,7 @@
 SET(TARGET_ADDED_LIBRARIES osgVolume osgFX)
 
+IF   (WIN32)
+   SET(TARGET_EXTERNAL_LIBRARIES ws2_32)
+ENDIF(WIN32)
+
 SETUP_APPLICATION(present3D-osg)