If you are looking for some ASP code to allow users download file from webserver, here you go and I hope it does help:

<%@Language="VBScript"%>
<%Option Explicit%>
<%Response.Buffer = True%>
<%
On Error Resume Next
Dim strPath
strPath = CStr(Request.QueryString("file"))
‘– do some basic error checking for the QueryString
If strPath = "" Then
Response.Clear
Response.Write("No file specified.")
Response.End
ElseIf InStr(strPath, "..") > 0 Then
Response.Clear
Response.Write("Illegal folder location.")
Response.End
ElseIf Len(strPath) [...]