Apache2 Ruby on rails and Redmine changing the rail app url

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http://serverfault.com – Hello I successfully set up my Redmine server (Ubuntu 12.04LTS, Apache2, Passenger, Mysql using the guide at http://www.redmine.org/projects/redmine/wiki/HowTo_Install_Redmine_in_Ub... ). However I have encountered a small problem. I would love to enter the internal ip adress of my server into the address bar of the browser and visit the site but I must enter ip_address/redmine and I can not portfoward the router to that. Currently if I use my website www.example.net or ip_address in the browser I get the default apache2 "it works"(index.html) page. I'm including my config files as I have no (HowTos)