Could someone please help me figure out this song?

Here's the link: http://www.youtube.com/watch?v=uENo2gn_Obs

It's called apple by Joe Brooks and it has 3 basic chords in it. The
capo is on the 2nd fret, but I can hear that the chords are E maj, A
maj, and B maj. He plays those chords as if they were....well the last
two I know look like G and A, but I cannot for the life of me figure
out the first one. It's a D of some sort, but I cannot figure out the
fingering. I'm really bad at transposing capoed -sp- songs, so when I
see someone capoing on the second fret and playing an A major chord,
it looks like a regular G to me. So I call it G instead of A, because
that's what it looks like. But anyway! There is also a section when he
plays the A (which is really the B) with the root note on the 7th fret
E string. What is the fingering for that particular chord? Or maybe
you could really really simplify my life and give me the basic
fingering for the 3 chords of this song in the way that Joe plays it.
I don't know all my guitar chords :)