Your key is:
0D02uiEmQKCqHu5Gr_KFP1k5t-2AMr0TPgInMFQ
This key is good for all apps signed with your certificate whose fingerprint is:
4B:67:64:6D:00:9C:5F:8C:C0:EF:32:FC:36:31:CF:F3
Here is an example xml layout to get you started on your way to mapping glory:
<com.google.android.maps.MapView android:layout_width="fill_parent" android:layout_height="fill_parent" android:apiKey="0D02uiEmQKCqHu5Gr_KFP1k5t-2AMr0TPgInMFQ" />
Check out the API documentation for more information.