can you tell me which file you restored from Time Machine?
If you restored the entire iTunes folder in ~/Music/iTunes then it actually should have restored all playlists, as well.
What was the problem you were having that necessitated a restore?
Was the old MacBook running a much older release of iTunes?
Ok, that's fairly recent.
As I mentioned, restoring from Time Machine should have restored all playlists, as well.
I would recommend going back and restoring a slightly older copy of the iTunes folder.
The playlist info is sort of spread among the files you see in the folder. iTunes Library.itl is the main file, however.
Sure thing. Just reply back when you are ready.