Watch the Dm7 - 5th String Root #1 online guitar lesson by Marcy Marxer from Swingin' Rhythm Handbook

The Dm7 uses the same fingering as the G7 with the bass note on the 6th string. Move the G7 from the third fret to the 5th fret and it becomes A7. Drop the position over one string using the 5th string as the bass and you have a Dm7.