Hiding user and password in ASPX (for CDO Message sends)

I have seen examples like the one below on the microsoft web site with regard to sending an email from an aspx page script using CDO Message.  My question though is what is the best practice with regard to hiding the password and not just including it in the aspx script code?  This will be the username and password for the SMTP email server we are using, so it isn't a user on the IIS server, etc.  Any guidance appreciated...

http://support.microsoft.com/kb/555287

using System;
using System.Web.Mail;
namespace SMTPAuthentication
{
 public class SMTPAuthenticationExample
 {
  public static void SendMail()
  {
   string smtpServer = "smtp.domain.com";
   string userName = "johnDoe";
   string password = "pass";
   int cdoBasic = 1; 
   int cdoSendUsingPort = 2; 
   MailMessage msg = new MailMessage();
   if (userName.Length > 0)
   {
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", smtpServer);
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 25) ;
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", cdoSendUsingPort) ;
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", cdoBasic); 
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", userName); 
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", password); 
   }
   msg.To = "someone@domain.com"; 
   msg.From = "me@domain.com";
   msg.Subject = "Subject";
   msg.Body = "Message";
   SmtpMail.SmtpServer = smtpServer;
   SmtpMail.Send(msg);
  }
 }
}

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~bp