Running Orbeon forms through Tomcat

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I am trying to create a form using Orbeon Form Builder (http://www.orbeon.com/) to be used on a Liferay (http://www.liferay.com/) based website. I have been told that the Orbeon form builder needs to be run through Tomcat. I have downloaded the "Orbeon Forms 3.7.1 (Developer Release)" and I run my localhost instance of Liferay through Tomcat. The final use of the form would be for an online instance of Liferay.

I basically wanted to know how to run Orbeon form system though Tomcat? Thanks in advance.