This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
The "path" is the path the operating system uses to find execuatables. The "classpath" is the path the JVM's class loader uses to find classes (and other resources). Have a read of our FAQ on the subject.