从下拉菜单将数据发送到CSV文件

this is my first time on here. i am currently designing a site which has an application form that emails the data in CSV format from an HTML form controlled by PHP everything works OK at the moment but i have now been asked to make some of the input fields have a drop down option. i worked out how to make a drop down menu but i cant seem to get it to send the data to the CSV file........

HELP!!!!!

i have embeded a snippet of the form of which the first line (the title input) needs to be a drop down

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01       <Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html>

<head>
<title>Application Form</title>
<link href="view.css" rel="stylesheet" type="text/css" media="all">

<div id="form_container">
  <div class="form_description">
  <h2>Application form</h2>
        <br>
        <p>Please complete this form</p>
    </div>


<form action="application.php" method="post">
  <p>
        Title<br>

        <input type="text" name="formTitle" maxlength="50" value="<?=$varTitle;?>" />



       </p>         
       <p>

        forename*<br>
        <input type="text" name="formForname" maxlength="50" value="<?=$varForname;?>" />
    </p>