title: C++ header file includes <> paths
body: <p>Quick background.  I'm using the following:</p>
  
  <ol>
  <li>Windows XP</li>
  <li>Visual Studio 6.0</li>
  </ol>
  
  <p>When you specify a #include like the following where does it look for this header file:  </p>
  
  <pre><code>#include &lt;msxml.h&gt;
  </code></pre>
  
  <p>Is it looking at an environment variable to determine which paths to look at?  If so which one?</p>