The D suspended two is a piano chord that combines three natural notes to produce a richer sound.http://www.free-online-piano-lessons.com/piano-chords.html Suspended two chords are created when the major third in a scale is changed to a second.http://www.bestpianolessons.com/piano-facts/piano-facts-7.html In this case, the major third of the D major chord has been changed to E natural, so that you are playing the root, the second and the perfect fifth.http://www.youtube.com/watch?v=cfUEpWU0dmw  

The three notes that comprise the Dsus2 are D natural, E natural and A natural, all of which are white keys on the keyboard.http://www.youtube.com/watch?v=cfUEpWU0dmw Natural notes are denoted by the symbol "♮".http://www.msnsymbols.com/symbols/msn-music-note-symbol/ This Dsus2 is also referred to as a major triad because it plays three notes from the major scale.http://www.free-online-piano-lessons.com/piano-chords.html Watch the video below and follow the steps to begin practicing this chord. 

There are seven complete octaves on a standard piano, each comprised of the notes C, D, E, F, G, A, B and C, in that order. Review these notes and their positions before you begin learning chords. To start the Dsus2, put your thumb on D natural. Next, place your index finger on E natural and your pinky finger on A natural. Your fingers should only be touching white keys. This is the final shape of the chord.http://www.youtube.com/watch?v=cfUEpWU0dmw 

When you feel comfortable with the chord's finger placement, try playing the Dsus2. It is best to keep your hands relaxed and use the tips of loosely curved fingers to push all three keys simultaneously. The sound of the chord should be smooth and unified. Repeat the steps, rewatch the video and replay the chord as many times as necessary for you to learn the Dsus2.http://www.youtube.com/watch?v=cfUEpWU0dmw