Exemplo de implementação:
<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>
<%
Dim objUpload
Set objUpload = Server.CreateObject("Dundas.Upload.2")
objUpload.MaxFileSize = 150000
objUpload.UseVirtualDir = True
objUpload.UseUniqueNames = False
objUpload.Save "/diretorio"
Set objUpload = Nothing
Response.Write "Upload efetuado com sucesso"
%>