I having some issues where basically it wont install...

I may be being a tough ambitious trying to install the Zen agent on Linux Ubuntu but thought I would post here see if any one has managed it.

basically this is what i get

sudo /usr/lib/jvm/java-6-sun- /home/***USER***/Downloads/PreAgentPkg_AgentLinux.bin
Exception in thread "main" java.lang.NoClassDefFoundError: /home/kelvin/Downloads/PreAgentPkg_AgentLinux/bin
Caused by: java.lang.ClassNotFoundException: .home.***USER***.Downloads.PreAgentPkg_AgentLinux. bin
at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 06)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 47)
Could not find the main class: /home/***USER***/Downloads/PreAgentPkg_AgentLinux.bin. Program will exit.

any ideas how i can make this work ?? or should i be using a different agent, or inventory only agent