How do I resolve the error "The type or namespace name 'SQLConnection' could not be found (are you missing a using directive or an assembly reference?)"?

How do I resolve the following errors in my code that follows:

I am using VS2010 and working on a C# Web application.

Error      1      The type or namespace name 'SQLConnection' could not be found (are you missing a using directive or an assembly reference?)      \\msad\root\na\ny\users\zimmermj\visual studio 2010\Projects\SMRWebForm\SMRWebForm\SMRWebForm1.aspx.cs      64      20      SMRWebForm
Error      8      The type or namespace name 'SQLCommand' could not be found (are you missing a using directive or an assembly reference?)      \\msad\root\na\ny\users\zimmermj\visual studio 2010\Projects\SMRWebForm\SMRWebForm\SMRWebForm1.aspx.cs      74      24      SMRWebForm

------------------------------------

using System;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;

namespace SMRWebForm
{
    public partial class SMRWebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {                        
            using (SQLConnection conn = new SQLConnection(connString))
            {
                conn.Open();
                StringBuilder sb = new StringBuilder();
                string[] sArray = new string[9];
                sArray[0] = banknum;
                sArray[1] = transDtYR;
                sArray[2] = transDtMnth;
                sb.AppendFormat( myInsert, sArray);
                string cmdText = sb.ToString();
                using (SQLCommand cmd = new SQLCommand(conn, cmdText))
                {
                   int rowsAffected = cmd.ExecuteNonQuery();
                }
            }
        }
    }
}