When you get in to the DMV and the worker going to ask you what you need to do, they going to give you a ticket with a number (it said you going to renewal your DL) and the DL form.
Fill out the form and wait for your turn, going to the counter and show the DMV worker your new EAD with your old DL.
They will check your form and writing down your new EAD expires date. BTW, on top of the form you should check the "change" because they going to update your new temp visitor expires date and change you just $12.50.
Thats it and wait for 2 weeks for your new DL.
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Application Delivered - 08/31/2012 to Chicago Lockbox via USPS from New York City. G-1145 Notification - 09/07/12 - Routed to Vermont Service Center. Date of I-797 C Notice of Action - 09/15/2012
Date of Biometrics Appointment - 10/11/2012. Completed 09/21/12
EAD Approval - 10/15/2012 I766 (Card) - 10/18/2012 with I797' letters