Congrats on winning! You have to follow the Department of State instructions for DV Winners: http://www.travel.state.gov/visa/visa_4759.html
Also, you need to keep an eye on Visa Bulletin: http://travel.state.gov/visa/bulletin/bulletin_1360.html to see when you will be current and expect interview letter. Please read these carefully, if you have further questions, you can PM me. Good Luck!