Hello Mr. McClanahan and thanks advance for your prompt answer, My applet code needs to use javascript functionality for navigating through parent and child windows. When I try to include the java40.jar in my classpath and also in the makefile, and then try to compile using make , I get the following error : java.lang.UnsatisfiedLinkError: init at java.util.zip.Inflater.<init>(Compiled Code) at java.util.zip.ZipFile.getInputStream(Compiled Code) at sun.tools.java.ClassFile.getInputStream(Compiled Code) at sun.tools.javac.BatchEnvironment.loadFile(Compiled Code) at sun.tools.javac.BatchEnvironment.loadDefinition(Compiled Code) at sun.tools.java.Environment.loadDefinition(Compiled Code) at sun.tools.java.Environment.loadDefinition(Compiled Code) at sun.tools.java.Environment.loadDefinition(Compiled Code) at sun.tools.java.ClassDeclaration.getClassDefinition(Compiled Code) at sun.tools.javac.SourceClass.checkSupers(Compiled Code) at sun.tools.javac.SourceClass.resolveTypeStructure(Compiled Code) at sun.tools.javac.SourceClass.basicCheck(Compiled Code) at sun.tools.java.ClassDeclaration.getClassDefinition(Compiled Code) at sun.tools.javac.Main.compile(Compiled Code) at sun.tools.javac.Main.main(Compiled Code) error: An error has occurred in the compiler; please file a bug report (http://java.sun.com/cgi-bin/bugreport.cgi). 1 error *** Error code 1 make: Fatal error: Command failed for target `dro.jar' I have been seeking help from various sources. Could you PLEASE spare a few moments of your precious time and help me out ? Thanks again for your time and information. Jamuna Harvu.