G Major chords:

G:         5x0450
Gadd9:     505400
Gsus4add9: 5x5500
Cmaj9:     x32020
Cmaj7add6: x32000
D7:        004500
D7:        000234

Chords are displayed from the low E to high e.
Each number corresponds to the appropriate fret
(0 means an open string.) So an E in standard 
tuning would look like this: 022100