How many people would have access to this file? Would it be effective to put it in a protected directory, and then give the password to those people so that they could access it?
By that I mean stick the file in a directory and then put read only rights on that directory and only for one user (or more if you wish) -- but no rights for the default users (browser)... then, if anyone tries to type in the address, they will be prompted for a username and password.
Additionally, you could put that username and password on a page that is easily protected via your ASP access rights.
The page might look like this:
<%
if session("privelage"

= "canSee" then
%>
Click the link below and this information when prompted:
userName: special
password: 8976212
<%
else
response.redirect("someOtherPage.asp"

end if
%>
Would be a secure option --
paul