reading page from msn Proxy Authentication Required

http://moneycentral.msn.com/investor/external/excel/rates.asp 
I want to read the data from this page and put in a literal control (for now) but I am getting the error Proxy Authentication Required.  What can i do about this?
here is my code:

    protected void Page_Load(object sender, EventArgs e)
    {
        string url = @"http://moneycentral.msn.com/investor/external/excel/rates.asp";
        string result = GetHtmlPage(url);
        data.Text = result;
    }
    protected string GetHtmlPage(string strURL)
    {
        String ...