Can this be used to to crawl a specific website and be used for a "website search"

[drwankingstein]

Was wondering if it was possible to use this as a website specific search, in place of the "powered by google" search you often see. If so what would the process of setting this up look like? I did try to look into it, but i'm not sure how to setup the crawler and stuff to crawl specific website(s)