in reply to SSI usage in CGI scripts

Please read How do I post a question effectively?. The clearer you make your question, the more replies you'll get.

It's unclear whether you're asking about CGI programs or static HTML pages. Your question mentions both. If you're talking about HTML pages then your question is off-topic for a Perl web site. If you're talking about CGI programs then you need to give more detail before we can give a reasonable answer. What, exactly, are you trying to do?

--
<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg