Automated Wallpaper Changing application

I want automatic wallpaper changer application for Android which should work on all blackberry devices . *it should have an icon of 50x50 png image , a splash screen which should show that the application is loading , and a main menu *the application should have the feature of setting the timer for the wallpaper. i .e 30 sec , 1 min , 5 min , 15 min , 30 min , 1 hr. i.e Set custom intervals for wallpaper changes *It should have atleast 12 different wallpapers which i can change .and it should also have the feature of selecting the wallpapers from users images. *The main menu of the application should have - turn on - to turn on the application or to turn off the application, with default images or user images -options - to set the timer for wallpaper -images - should display the images , that would be getting changed in the application -about - should give the description of the application functioning - exit --to exit the application