New to Java

i am trying to import this package when trying to compile a simple java class from a Dos prompt (win2k), under jdk2 (1.4.2) using the javac fn.java command:

import javax.mail.*;

but get error app.java:8: package javax.mail does not exist.

i have the mail.jar file, but no matter where i put it, i still get the same compile error - does not exist.

i would greatly appreciate any suggestions on what i am doing wrong.
thanks, p.