Brian,
Apply apply apply! Yes, school's have "suggested" GRE scores but they are only one part of an application package. GPA, a strong statement of purpose, and good rec's can get you in the door too. You don't necessarily need all of these but a combination that sets you apart from the crowd. While I did not apply to Dartmouth last year (I am a current student at Emory) I had a low GPA (well lower than the average and below the recommended) and I still got in to almost every school I applied to. The same can be said of many other applicants that are lacking one part of the package. If it really irks you there is always the option of taking it again, though depending on what you got that may really not be necessary. Hopefully there will be some Dartmouth people that chime in but I would really not discount your GPA, life experiences, and statement of purpose as a way to get you in. Good luck!