automated e-mail

in my web.configu I having folowing section:
<system.net>
     <mailSettings>
       <smtp from="webmaster@parcc.net">
         <network defaultCredentials="true" host="mail.parcc.net"
          password="" userName="" />
       </smtp>
     </mailSettings>
   </system.net>
 
with VB I want obtain from string with folowing code
        Dim config As System.Configuration.Configuration =   WebConfigurationManager.OpenWebConfiguration( "~\\web.config")
       ...