The following is the version of Nights In White Satin I play. I think it sounds close to the Moody's version (if not like it). I have seen two other versions using slightly different chords, this is a third way and in my opinion slightly easier since it is easier to form Aadd9 then forming F or Bb (the two other chords commonly used in place of Aadd9).
Listen to the recording of NIWS to get the correct strum pattern.
Intro, strum in the following four times: Em, D, Em, D
Then, play all the verses like this (just swap appropriate lyrics):
Nights in white satin
Em DNever reaching the end
Letters I've written
Never meaning to send
Beauty I've always missed
With these eyes before
Just what the truth is
I can't say anymore
The the chorus is played like so:
'Cos I love you
Yes I love you
Em D Em D
Oh how I love you
The rest of the song is like the above only with lyrical differences. Use this as a reference and you should be able to play it fine.