I want to take this form I have already created

HTML Code:
<title>Form</title>
</head>

<body>
<form method="post" action="getform.php"> 
  <p>
    <select name="type" size="1" id="select">
      <option value="site" selected="selected">Dive Site</option>
      <option value="boat">Charterable Boat</option>
      <option value="slip">Slip</option>
    </select>    
  <p>Name of Site:
    <input name="dname" type="text"><br>
  <p>Latudude:
  <input name="lat" type="text">
  <br>
  <p>Longditude:
  <input name="lng" type="text">
  (If you don't know leave blank and put a detailed explination of the location in the discription)<br>
  <p>Discription:<br> 
    <textarea name="desc" rows="15" cols="41"></textarea>
    <br>
  </p> 
  <p>Your name:
  <input name="yname" type="text">  
  <p>
    <input type="submit" />
    <input type="reset" name="Reset" id="button" value="Reset" />
  <br>
 </form>
</body>
</html>
and submit it via email using php. I want the from line to simply be form and the subject to be the "dname" value The rest of the field I want to be included in the message body.