JAVA_HOME & CATALINA_HOME

I just want to know how to set environment variable on JAVA_HOME
and CATALINA_HOME on windows 2000. I tried to run the setup of
jakarta-tomcat-4.0 but I encounter an error because of this.
Thanks

Go to:
Start
Configuration
Control panel
System
Advanced
Variable enviroment
new
Variable Value
CATALINA_HOME c:\directory_name_jakarta_tomcat
by example:
CATALINA_HOME C:\jakarta-tomcat-4.0.3
Here is a helpful link:
http://www.moreservlets.com/Using-Tomcat-4.html#Catalina-Home
Best regards,
Mary

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Message was edited by: jon
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I just dont know how to get it up and running. And what's the problem ?
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Well, hi again!
My problem is not solved, when I tried to start Tomcat today it fails with the same message as earlier, namely
C:\jakarta-tomcat-4.1.12-LE-jdk14\bin>catalina start
The JAVA_HOME environment variable is not defined correctly
This environment variable is needed to run this program
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[http://plato.acadiau.ca/courses/comp/dsilver/2513/EclipseAndTomcatTutorial/]
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2). I have computer background and good understanding of OOP's and core java concepts can you pls tell me which book or books or blog or article which will give me best practical practice for best knowledge (eg. like your blog gave me good step-by-step knowledge) do you any more good links from where I can practice and learn side-by-side.
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