I'm new to smart phones. I've never owned one before and now I'm the proud owner of a droid X. I'm confident in my handling so far, but I need some help with my knowledge of apps. I want an app that will let me have rotating wallpapers and possibly rotating ringers. I want to be able to customize a little more. Does that exist? What is the best app for ringers and wallpapers? Any others that are a must?