Ajax jquery.autocomplete or Google suggest

Has anyone managed to use ajax code to do an autocomplete/suggest style field. Basically I have a field on a web form that I want a user to be able to select an option. It is a water management system and there are 2000 streams in the database for them to choose the WaterResource field. I thought the most elegant solution would be to have a field that uses ajax to find a narrowed down list of choices once they have typed a few letters in. Then present them with those choices, just like when you do a Google search. I have been trying to use jquery and the jquery.autocomplete plugin. But I’m not having any luck yet.

Subject: Ajax jquery.autocomplete or Google suggest

FYI - solved

I found an answer to do it using scriptaculous and prototype JavaScript libraries thanks to this blog entry:

http://www.nsftools.com/blog/blog-08-2006.htm