title: How to use INET or Mixim's module in my own custom project
body: <p>I want to build my own custom wireless sensor network project by using simple modules in INET or Mixim. How can I use them ? I try the following codes in my cc file and NED file, but the system cannot find them. So do I need to create my project under the subdirectory of INET ? Is there any other method?</p>
  
  <pre><code>#include "inet/common/INETDefs.h"
  #include "inet/networklayer/contract/IInterfaceTable.h" 
  
  import inet.networklayer.configurator.ipv4.IPv4NetworkConfigurator;
  import inet.node.inet.INetworkNode;
  </code></pre>
  
  <p>There is another question, how can i find the achieve C++ file of examples in INET ? Because there are only ned files in the examples without the achieve C++ fileS, I want to find out how the examples work. Any help ?</p>