This is definitely an area where help is needed, and you can't hope for the newbies to help themselves here. So how about a generic "keywords" attachment to each posting label (which will sometimes be helpful even when higher-ups are posting).

For example, when a posting is submitted, the process that formats the posting title could take the time to scan the text and see what sorts of familiar terms are in there (CGI, DBI, ODBC, regex or "regular expression", etc) -- and even rank these by frequency -- pick about three of these and include them automatically as part of the title.

The really clueless posters might miss all the important terms, but if they look at the "keyword" portion of other postings, and see that their own post has none, they might figure it out.

The title could even contain a little flag to indicate whether the posting contains any <code>, if that seems important.