I am having severe difficulties with installing new packages into the
CLASSPATH of my Java compiler, jdk1.3.

I have been trying to make use of the javax.mailx.* and
javax.mailx.internet.* packages. I have followed the instructions
from the http://java.sun.com/products/javamail/ URL. I have placed
the required .jar files in what I believe to be the correct
CLASSPATH, C:\Program Files\jdk1.3\lib. I have subsequently set this
as my CLASSPATH in both the pcGRASP and JavaIDE editors. Upon
attempting to compile one of the demo files - such as msgsend.java -
errors relating to the aforementioned packages not being found are
returned.

I have gone through the process of installing the CLASSPATHS and
setting the CLASSPATH on endless occassions, but to no avail. Any
help would be greately appreciated.