Capture posted image from Flash/swf for uploading

This is the first time I've come across this kind of problem before and I'm having trouble approaching it. 
I have a swf developed by someone else that posts an image and I have to create a handler of some kind to capture it, name it, then upload it to a directory.  I've tried a couple ways and nothing is working. 
this is a quick an dirty approach, just an aspx file
<%@ Page Language="C#" %>
<%@ Import Namespace="Components" %>
<%@ Import Namespace="System.IO" %>

<script runat="server">
    public partial class upload : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string uploadDirectory;
   &nb ...