The College CALS server uses a program called Webinator for searches of sites. To request a search on a site, fill out this form. The coding for the search will be sent to the indicated person. This code can be added as a search box on any page, or you can set up a separate search page for your site, which gives examples of how to do a search.
Once the search is set up, the search database for your site is updated once a week. By default the search is done for PDF and HTML documents. However, to be picked up in the database, you must have a link to the document. That is, a document which you are not linking to will not be placed in the search database.