.jar help

So, in the process of learning Java, I'm working through Intro to Programming Using Java, I've been assigned a project. The goal is to take a fully functioning desktop application (a 3D fly through) and turn it into an applet. I received the code and started in today.

Here's where it gets ugly. I really have no sense .jar files. I know what they do and what they're there for, but have no idea how to handle them. The application has two particular ones that need to be implemented, gluegen-rt.jar and jogl.jar. I cannot get the program to run (as it does on other's computers) on mine and I know I'm not installing, extracting, classbuilding, etc. these libraries (.jars) in the right way for the program to use them at runtime.

I'm currently using Eclipse SDK on Windows XP. Is there an idiot's guide for placing .jar files properly? I seem to remember my higher-ups saying I needed to download a jogl distribution and make changes to a Windows .DLL for all of this to function. The people above my aren't really available for regular assistance, so anything I could get here would be tremendously appreciated.

[1142 byte] By [javaonthebeacha] at [2007-11-27 10:07:16]
# 1

Have you imported the JARS to your project folder in eclipse? You right-click on your project and select build path>Add external archives and the find your jars on your drive. Then you would make a class and call something from your JAR, say another class and Eclipse will do the import automaticaly.

Can you explain more about what you have done to try and add these JARS to your project?

_helloWorld_a at 2007-7-13 0:43:34 > top of Java-index,Java Essentials,New To Java...
# 2

Thanks for the tip with that. Better than copying and pasting into the JRE folders.

However, now it produces:

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: Could not initialize class com.sun.opengl.impl.windows.WindowsGLDrawableFactory

...which is from the jogl.jar I just imported.

javaonthebeacha at 2007-7-13 0:43:34 > top of Java-index,Java Essentials,New To Java...