I have no affiliation with these people, but KSearch from KScripts is what I have provided my corporate clients. It creates a database for the whole site, and searches that, so it is really fast. I don't like the way that the indexing script is all by its lonesome, and doesn't run well via a web browser (it times out,) but that's fixable.

Check out http://kscripts.com/ksearch/

# Dross, Professional Dullard

Edit by tye