una domanda il file system object lo smepr eusato poco ma perche' cosi nn mi prende il file?

set upload = server.CreateObject("Scripting.FileSystemObject")
get_file= upload.GetFile(Request.Form("file"))

<form method="post" action="upload.asp">
<font size="2">Scegliere il file da Uplodare</font>


<input type="file" name="file" size="20">

<input type="submit" name="Enter" value="Upload File">
</form>