Tomcat 5.0 configuration question

[Vad Fogel]

Hi, I'm trying to configure Tomcat 5.0.x using "Murach's JSP and Servlets". The book is for Tomcat 4.0.x though, and it doesn't say much about Win XP OS to make matters worse.
I have NetBeans and J2SE 1.4.2 installed on my machine. My system CLASSPATH variable points to .;C:\Program Files\j2sdk_nb\j2sdk1.4.2\jre\lib\ext\servlet-api.jar;C:\Program Files\j2sdk_nb\j2sdk1.4.2\jre\lib
Anybody who has a hands-on experience with Tomcat, I have these questions:

How and where do I define JAVA_HOME env. variable?

Should I define (if yes, then how) CLASSPATH env. variable in catalina.bat?

Are there more significant changes between Tomcat 4.0 and 5.0?

Would appreciate your response.

[David O'Meara]

I'll move this to the Apache/Tomcat forum for you.
Dave