I already sent the the tool with my last mail. I am sending it back again.

1) Extract the jad.exe and place it in any directory.
Add that directory name to your classpath.
2) If you have a .class file  and want to get the .java file of that, say u have
myFirst.class file then either add the directory which contains
myFirst.class
to your classpath or go to that directory and issue the following command
jad myFirst.class
You will find myFirst.jad file created in the same directory. This is
nothing
but your .java file

I hope that was what you were asking for