I\'ve read so many articles/explanations on this and spent too many hours, but everything is either too broad or specific.
This question really only applies to an Ap
From the base of your bin directory, why not try:
jar.exe -cvf cxapplet.jar *
Place your external jar files in the appropriate location in you your bin directory, and manually jar your class files with the external jar files.
Alternatively, see this thread which might provide more information for you.