for Symbian s60 5th edition allows you to change the user interface and main menu on your mobile.
Spark Beta is the Ultimate Active Home Screen with Live Twitter & Facebook Social Streams, Live Breaking News, Entertainment, Sports and Top News categories all live on your Phonetop. Update Twitter & Facebook at Once! Blog or Share News To Facebook, Twitter or SMS. View the Weather Forecast Wherever You Are With Spark ’s Location-aware Weather Module. Spark will turn your phone into a Home-Sweet Phone.
Spark on your home screen modules Facebook updates, Twitter, a Weather Widget, shortcuts to your applications and a short summary of news keeping you updated throughout the day. These modules are configurable, but still, the application currently does not allow many changes as it is in beta version.