After the 15 day trial ends you will lose spb mobile shell. That is the shell that allows you to launch programs. However if you read this thread and the one here closely
http://forum.xda-developers.com/showthread.php?t=392985 you will see that you need another program called Ultimate launcher. If you are a player then you will learn that UL can do most of the things that Spb MS does and you won't miss Spb MS. when you get time you can learn alot about UL here
http://forum.ppcgeeks.com/showthread...ltimate+launch.