title: ISAPI Rewrite rule help (http://www.foo.com/bar --> http://www.foo.com/bar.aspx)
body: <p>A really easy one, but I need to get this right, and cannot afford mistakes as I need to deploy on a live server as soon as I can. </p>
  
  <pre><code>http://www.foo.com/bar --&gt; http://www.foo.com/bar.aspx
  http://www.foo.com/bar?q=boo --&gt; http://www.foo.com/bar.aspx?q=boo
  
  # I only want /bar to get rewritten to /bar.aspx
  # everything else stays as is
  http://www.foo.com/bar.aspx --&gt; http://www.foo.com/bar.aspx
  http://www.foo.com/bar.pdf --&gt; http://www.foo.com/bar.pdf  
  </code></pre>
  
  <p>I got here, but this turns <code>bar.aspx</code> into <code>bar.aspx.aspx</code>, and that ain't good.</p>
  
  <pre><code># Helicon ISAPI_Rewrite configuration file
  
  RewriteEngine on
  RewriteRule (.*) $1.aspx [L]
  </code></pre>