Forum Moderators: mack
It may be just me, but I like to keep this sort of thing on the site, so installing a site search script seams like good sense.
You may want to have a look through hotscripts.com for "site search" One good example of a site search script is "fluid dynamics search engine" (fdse). I haven't used this script in a while but it used to be available in 2 versions. Shareware (with link to fdse) or paid with link removed.
The main third parties that provide site search are freefind and Google site search.
Hope this helps.
Mack.