title: pygraphviz error: program neato not found in path
body: <p>I'm running <code>Windows 7</code>, and using python version 2.7.</p>
  
  <p>I've been trying to use <code>pygraphviz</code>, but whenever I use <code>G.layout()</code> on a graph, I get the error message;</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;pyshell#16&gt;", line 1, in &lt;module&gt;
      G.layout()
    File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1305, in layout
      data=self._run_prog(prog,' '.join([args,"-T",fmt]))
    File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1251, in _run_prog
      runprog=r'"%s"'%self._get_prog(prog)
    File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1239, in _get_prog
      raise ValueError("Program %s not found in path."%prog)
  ValueError: Program neato not found in path.
  </code></pre>
  
  <p>I know, however, that the <code>Graphviz</code> files are installed, and the directory is in my path (I've manually gone and added it).</p>
  
  <p>I've tried the simlink solution given <a href="https://stackoverflow.com/questions/14679434/how-to-run-neato-from-pygraphviz-on-windows">here</a> but all I get when I enter that into the command line (administrator mode) is a message saying it is not recognized as an internal or external command, operable program, or batch file. I'm not experienced enough to know whether there's something I'm failing to do with that though.</p>
  
  <p>Is there something I can do to make this work?</p>