I am on a Windows machine. Want to practise Java for the web using: Tomcat, Java, JSP's, Spring Framework, and Hibernate.
http://www.eclipse.org/downloads/
(Silly question, but I am a newbie and don't want to get the wrong IDE version.)
You want to practise java for the web using: tomcat, java, jsp's, spring framework, etc. then you should download the Enterprised version.
Personally I would prefer NetBeans. I use it frequently and I find it better(simpler rather) than Eclipse.
As a learner Eclipse would be a better. You can follow this URL to download it: http://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/galileo/SR1/eclipse-java-galileo-SR1-win32.zip.
Once you are comfortable with the basic functionality with Java, you can start with any web Server or an application server. Then you can implement the Framework.
Personally Eclipse is very friendly in use.
Don't go for any of these.
As you are working on windows platform I would suggest you to first try out JBuilder. Checkit out! It is better in all ways compared to Eclipse and Net Beans but to gather, because it gives a Visual way to build your GUIs!