What's the movie? There are numerous .sub (subtitle format files) databases that have subtitles for loads of Holywood movies. However, you will need a special media player that plays .sub files in sync with the movie. There are numerous out there. Just give Google a search.
Those are the three first sites that came up in Google when I searched. They have options for languages too, so if you need dutch etc. it could be useful. I don't know if this information is appropiate, so hurry up and read it before the mods edit. You know how it is, you're an ex.