Implementando o Dundas Upload

Formulário (upload.html)

<html>
<body bgcolor="#FFFFFF">
   <form method="POST" enctype="multipart/form-data" action="upload.asp">
      <input type="FILE" size="40" name="FILE1"><br>
      <input type="FILE" size="40" name="FILE2"><br>
      <input type="FILE" size="40" name="FILE3"><br>
   <input type=submit value="Upload!">
   </form>
</body>
</html>

Script de Upload (upload.asp)

Dim objUpload
Set objUpload = Server.CreateObject("Dundas.Upload.2")

objUpload.MaxFileSize = 150000
objUpload.UseVirtualDir = True
objUpload.Save "/diretorio"
Set objUpload = Nothing
Response.Write "Upload efetuado com sucesso"

Documentação do fabricante: http://aspalliance.com/dundas/