Type or namespace name 'aspNetEmail' could not be found

I am developing a page in Visual Studio that will send me an email with the comments the user leaves on the page.  To do this I am using a program called aspNetEmail which is a component provided by my hosting company.  However, to use this component in visual studio I have to have the dll (aspNetEmail.dll).  I obtained the dll and added it as a reference to the project, as a solution item, and as an existing item.  All of these produced the same result. ** CS0246: The type or namespace name 'aspNetEmail' could not be found (are you missing a using directive or an assembly reference?)**  Here is the code I am using:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using aspNetEmail;

namespace MastaGardener
{
      /// <summary>
      /// Summary description for comments.
      /// </summary>
      public class comments : System.Web.UI.Page
      {
            protected System.Web.UI.WebControls.TextBox txtName;
            protected System.Web.UI.WebControls.TextBox txtComments;
            protected System.Web.UI.WebControls.Button btnSubmit;
            protected System.Web.UI.WebControls.TextBox txtEmail;
      
            private void Page_Load(object sender, System.EventArgs e)
            {
                  // Put user code to initialize the page here
            }
      
            #region Web Form Designer generated code
            override protected void OnInit(EventArgs e)
            {
                  //
                  // CODEGEN: This call is required by the ASP.NET Web Form Designer.
                  //
                  InitializeComponent();
                  base.OnInit(e);
            }
            
            /// <summary>
            /// Required method for Designer support - do not modify
            /// the contents of this method with the code editor.
            /// </summary>
            private void InitializeComponent()
            {    
                  this.btnSubmit.Click += new System.EventHandler(this.btnSubmit_Click);
                  this.Load += new System.EventHandler(this.Page_Load);

            }
            #endregion

            private void btnSubmit_Click(object sender, System.EventArgs e)
            {
                  //EmailMessage msg = new EmailMessage("localhost");
                  aspNetEmail.EmailMessage msg = new aspNetEmail.EmailMessage("localhost");
                  msg.FromAddress = txtEmail.Text;
                  msg.To = "helloworld@aol.com";
                  msg.Subject = "Comments & Suggestions";
                  msg.Body = txtComments.Text;
                  msg.ThrowException= false;
                  if ( msg.Send() )
                  {
                        Response.Write( "message sent!");
                  }
                  else
                  {
                        Response.Write( msg.LastException().Message );
                  }
            }
      }
}

The project rebuilds fine this way without errors, but pitches a fit when I go to view the page.  The other this is that when I type "aspNetEmail." the drop down box appears for me to choose something.  I'm not really sure what is going on.  Help asap appreciated!