You can call ADP at 800.533.7768 and they will mail you a paper copy of your W-2.
You are also supposed to be able to view it online at w2.adp.com but I can't get the registration code to work. The ADP person told me the code was UPS-FW2 and on this forum I saw that it was UPS-W2 but neither code will work. Does anyone else know what the registration code is or how to view your W-2 online?