Problems with : no J3D in java.library.path

Hello!

I try to run my Java3D applet in appletviewer but I only get this problem:
java.lang.UnsatisfiedLinkError: no J3D in java.library.path
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1312)
        at java.lang.Runtime.loadLibrary0(Runtime.java:749)
        at java.lang.System.loadLibrary(System.java:820)
        at javax.media.j3d.MasterControl$12.run(MasterControl.java:686)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.media.j3d.MasterControl.loadLibraries(MasterControl.java:683)
        at javax.media.j3d.VirtualUniverse.<clinit>(VirtualUniverse.java:206)
        at Test3dKeyNavApplet.<init>(Test3dKeyNavApplet.java:18)
        at java.lang.Class.newInstance0(Native Method)
        at java.lang.Class.newInstance(Class.java:237)
        at sun.applet.AppletPanel.createApplet(AppletPanel.java:579)
        at sun.applet.AppletPanel.runLoader(AppletPanel.java:515)
        at sun.applet.AppletPanel.run(AppletPanel.java:293)
        at java.lang.Thread.run(Thread.java:484)

I have realized that I have some problem with the: \"java.library.path\", but what is that, where is it located, and how do I change it and to what?

I run this on win 2000.

Hope some one can help me!!

Best regards

Fredrik

Ps The starnge thing is when I open the file in Explorer everything works fine!