Prova così:
codice:
<!--METADATA TYPE="typelib"
UUID="00000205-0000-0010-8000-00AA006D2EA4"
NAME="ADODB Type Library"
-->
<%
' METADATA SERVE PER IMPORTARE LE COSTANTI DI ADO2.5
path_temp = "C:\Documents and Settings\Administrator\My Documents\22-10-2008.pdf"
strNome = "22-10-2008.pdf"
Set objStream = Server.CreateObject("ADODB.Stream")
objStream.Type = 1
objStream.Open
objStream.LoadFromFile path_temp
'//stream generico, IE chiede di salvare
Response.ContentType = "octet/stream"
'//imposto il nome del file
Response.AddHeader "Content-Disposition", "attachment;filename=" & StrNome
Response.BinaryWrite objStream.Read
objStream.Close
Set objStream = Nothing
%>