This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Create a Date object with a time of 00:00, and set that for the spinner. You can use java.util.Calendar to get such a Date object. Another option is to use new Date(0), but I'm not sure how that will work out.