Using with Eclipse

I downloaded javarebel.jar and imported it into my project library (in Eclipse). Before setting the JAVA_OPTS in the Tomcat console, do I need to do anything else?
Can anyone please direct me to some form of documentation on how to use the rebel plugin with Eclipse?

General outline.
*) Download archive and extract to somewhere
*) Copy javarebel.jar to a location that is easily referencable (for example c:\javarebel.jar on Windows or /home/john/javarebel.jar on Linux)
*) Add the necessary java options "-noverify -javaagent:c:\javarebel.jar" to the startup of the container
*) You are done

No need to import the JAR to your project library. Think of it as not a project specific jar but more of a container specific jar.

See the examples and links to articles from the installation manual
http://www.zeroturnaround.com/javarebel/installation/

If you are using the Web Tools Project see the tutorial http://www.zeroturnaround.com/articles/javarebel-and-wtp-configuration/