If you are using Tomcat this is what you need to do;
Unzip the JForum zip to a known place.
In the Tomcat manager; http://localhost/manager/status click on 'List Applications' lnk. At the bottom of the page is a 'WAR or Directory URL field. Paste in the location where you unzipped JForum.
In the Context Path use /forum
Then press Deploy. JForum should then be added to the list of applications.
The above is assuming you have installed Tomcat correctly. I recommend the O'Reilly Tomcat Definitive Guide if you need to setup tomcat; www://www.ora.com.
Hope this helps
I'm actually using Oracle's Application Server but I'm toying with the idea of running Tomcat on the same server, but with Tomcat I've only ever deployed WAR files and Oracle's iAS also talks about deploying WAR or EAR files - but I thought if I knew how to deploy with Tomcat then I might be able to figure out how to deploy with Oracle [originally posted on jforum.net by Jelley]