QueueMetrics is a Java webapp, so you need to have a working servlet container to install it into (you can use Apache Tomcat, or Jetty, or any commercial solution).
Installing QueueMetrics is very simple; some people find it confusing because they have no Java or Tomcat experience on Linux.
A short tutorial explaining how to set up Java, Tomcat, MySQL and QueueMetrics on a clean Linux system can be found at http://www.astrecipes.net.
If you run a RPM based Linux distro like TrixBox, you may install QueueMetrics automatically by issuing the following commands:
wget -P /etc/yum.repos.d http://yum.loway.ch/loway.repo yum install queuemetrics
If you would like us to install QueueMetrics and other relevant software on a server you own, see Remote installation.
wget -P /etc/yum.repos.d http://yum.loway.ch/loway.repo yum install qloaderd