lilabe,
You can try this software:
http://www.cdmi.net/a2player/lrc_search.html. I haven't used it myself though, so don't know if it'll work or any good.
It's actually really hard to find sites to download .lrc files. As you can imagine, there are lots of songs out there, so there will be times when you can't find the lrc file for the song you want.
What you can do is:
1. Find just the worded lyrics to the song.
2. Use
LRC Editor 4.0 (downloadable from our website
here).
3. Combine it with
Winamp.
This should let you create your OWN .lrc file instead. This is an alternative if you don't have any luck finding the .lrc file itself.
Hope this helps.