i have an IIS server i wan tto do emails from and created a form to send an email and when i try to run it i get the following error:

"Server object error 'ASP 0177 : 800401f3'

Server.CreateObject Failed

/password/emailforms/TMP65do59dzdo.asp, line 8

Invalid class string "

here is my code:
please tell me what im doing wrong??/

<html>
<head><title>Sending Email with CDONTS</title></head>
<body bgcolor="#FFFFFF">
<%
Dim Email

'Create a new instance of the NewMail object
Set Email = Server.CreateObject("CDONTS.Newmail")

Email.From = "[email protected]"


Email.To = "[email protected]"

Email.Subject = "Sending Email"

Email.Body = "An email from your server :-)"

'Sets the priority of the message
Email.Priority = 1

Email.Send

Set Email = Nothing
%>
</body>
</html>