Well thank you for the other tip but right now i am having another problem when i execute runme.bat. When executing java -classpath .;CASCADESamples.jar SamplesStarter It gives this error message : Exception in thread "main" java.lang.UnsatisfiedLinkError : Cascadesamples\java\cascadesamplesjni.dll : Ome of the library files needed to run this application can not be found. I have looked for this file and found it. So the question how can i do please ?? Thanks in advance. Omar Msaaf.