about that google API, is this like what you mean?
http://search.ku.edu/search?q=enginering+&sort=date%3AD%3AL%3Ad1&output=xml_no_dtd&ie=UTF-8&oe=UTF-8&client=default_frontend&proxystylesheet=default_frontend
and if it is, could you give some hints on how they do that?
thanx

Try my tutorial on the Google API:
http://blogoscoped.com/archive/2003_06_22_index.html