You're welcome fingers!
You can do interesting things with the Em, either remove 2nd finger all of the time, or add the 3rd, which is even better!
Lookee here, and you can listen too. I believe that Paul uses the one-finger-fingering of the Em7 and you can see the look on the faces of the audience as they are just loving it, they almost melt with warmth. I spice it up even more with the three-finger-fingering up higher on the chart. http://www.8notes.com/guitar_chord_chart/Em7.asp
Sorry I am not a teacher. I do play all the time now, but am self taught, and my motto is to make interesting sounds, create many textures and layers, and keep chopping or pounding with steady percussive rhythm - that's a long, strange motto?