diff --git a/Extras/GIMPACT/Jamfile b/Extras/GIMPACT/Jamfile
index 688faf168..08914a857 100644
--- a/Extras/GIMPACT/Jamfile
+++ b/Extras/GIMPACT/Jamfile
@@ -1,10 +1,12 @@
 SubDir TOP Extras GIMPACT ;
 
-IncludeDir Extras/GIMPACT/include ;
+#IncludeDir Extras/GIMPACT/include ;
 
 Library GIMPACT : [ Wildcard src : */.h *.cpp ] ;
 CFlags GIMPACT : [ FIncludes $(TOP)/Extras/GIMPACT/include ] ;
 LibDepends GIMPACT :  ;
 
+   MsvcIncDirs GIMPACT : 
+	"../../Extras/GIMPACT/include"  ;
 
 InstallHeader [ Wildcard *.h ] : GIMPACT ;
diff --git a/Extras/GIMPACTBullet/Jamfile b/Extras/GIMPACTBullet/Jamfile
index e40137f42..c8afaee89 100644
--- a/Extras/GIMPACTBullet/Jamfile
+++ b/Extras/GIMPACTBullet/Jamfile
@@ -1,11 +1,13 @@
 SubDir TOP Extras GIMPACTBullet ;
 
-IncludeDir Extras/GIMPACTBullet ;
-IncludeDir Extras/GIMPACT/include ;
 
 Library GIMPACTBullet : [ Wildcard *.h *.cpp ] ;
 CFlags GIMPACTBullet : [ FIncludes $(TOP)/Extras/GIMPACTBullet $(TOP)/Extras/GIMPACT/include ] ;
 LibDepends GIMPACTBullet : GIMPACT  ;
 
+ MsvcIncDirs GIMPACTBullet : 
+	"../../Extras/GIMPACTBullet"
+	"../../Extras/GIMPACT/include"  ;
+
 
 InstallHeader [ Wildcard *.h ] : GIMPACTBullet ;
diff --git a/Extras/LibXML/Jamfile b/Extras/LibXML/Jamfile
index a514972df..c0eac3199 100644
--- a/Extras/LibXML/Jamfile
+++ b/Extras/LibXML/Jamfile
@@ -1,6 +1,5 @@
 SubDir TOP Extras LibXML ;
 
-IncludeDir Extras/LibXML/include ;
 
 Library libxml : [ Wildcard *.h *.c ] ;
 
@@ -8,9 +7,12 @@ CFlags libxml :
 [ FIncludes $(TOP)/Extras/LibXML ]
 [ FIncludes $(TOP)/Extras/LibXML/include ]
 ;
+
+   MsvcIncDirs LibXML : 
+	"../../Extras/LibXML"
+        "../../Extras/LibXML/include"   ;
 
 LibDepends libxml :  ;
 
-
 InstallHeader [ Wildcard *.h ] : LibXML ;