How do youm amke a search engine on your site?

Hey i have a site on dreamweaver and i whant to put a search engine on my site to search my site but i dont no how to make one?
plz help..

Hey i have a site on dreamweaver and i whant to put a search engine on my site
to search my site but i dont no how to make one?
plz help..

easiest-
http://www.google.com/services/websearch.html

if you want to install your own script on your server instead-
What scripting can you use, and are the pages static or in the database?