Hello J3Dgurus, I have just started with learning java. I have down loaded Java3D. My first aim is to get the demos running. When I run the demos I am getting exceptions : Ex: c:\jdk1.2\demo\java3d\HelloUniverse> java HelloUniverse Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/j3d/SceneGraphObject Can anyone tell me if installations are OK. What environment setting I need to make etc.. My c:\jdk1.2 : bin COPYRIGHT demo include include-old J3D12JDKOGL.isu java3d-utils-src.jar javasoft jre lib LICENSE READM E README.html README.Java3D-jdk.OpenGL.txt src.jar Uninst.isu Thanks in advance Mahesh. =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".