if you need to send the file through the webserver from the other machine you could try something like this
not sure whether you'll need to map the drive or not. depends whether an ado stream object can use a UNC path or not (which i've not tried).
filename = "d:\testfile.txt"
set ofso = createobject("scripting.filesystemobject")
if ofso.fileexists(filename) then
set ofile = ofso.getfile(filename)
Response.AddHeader "Content-Disposition", "attachment; filename=" & ofile.name
Response.AddHeader "Content-Length", ofile.size
Response.CharSet = "UTF-8"
Response.ContentType = "application/octet-stream"
set ofile = nothing
set oStream = createobject("adodb.stream")
oStream.type = 1
you might also want to change the headers being sent. at the moment it forces a download prompt to appear.