I mean to take some stable and small mail script (not sure, will the NMS TFmail script specifically suit this needs, sure, there are many others mailer scripts, more small size, which probably can be used more easily, without extended features) There are searchable text database(perl script) Then we add a cart script to provide to the client a possibility select item, add item, keep added items(here we use cookies and Javascipt), plus we add also mail script to mail order. Finally, we get simple and effective universal system, without even necessity use of a SSI.