I think that works to customize the various pages but not to customize the bottom tray. I am wanting to customize the four buttons at the bottom - the ones that stay there even when you go from screen to screen. I know other people can do this on other Galaxy phones with other carriers - but I can't seem to do it on the ATT Skyrocket. Did ATT block this??
Tap Application and once in your application drawer
Settings>View Type>Customizable Grid>Settings>Edit...at which point you should be able to drag and drop. Then you can set your view type back to what you want.