IF it's not there then you need to create a new entry. (Are you using Windows? I've never heard it called the system "applet" before....)
Just add a new entry to the Environment, call it CLASSPATH, and point it to your root class directory or directories. Also include the .jar files. So, it should look like:
C:\user\java\sources;c:\user\java\libs\mylibrary.jar;C:\user\java\libs\someOtherLib.jar
See
this article in the FAQ for more information.
Piscis Babelis est parvus, flavus, et hiridicus, et est probabiliter insolitissima raritas in toto mundo.