Site to get subs from?

I ripped a few DVD's the other day and I want to add soft subtitles to them, I know how but I don't know where to get the sub files from. Doe's anyone know??

http://www.siteguide.us/2007/07/12/8-places-to-get-the-best-free-movie-subtitles/
This one is a list of 8 sites..you can try from these until you find one that's right for you.

Thanks.