By default, Windows 7 doesn't allow people to sort the programs menu in the start menu. Windows 7 manage its start menu sorting by name. However, there is a way you can align your programs in your start menu.
Open the 'Taskbar and Start Menu Properties' and move to the 'Start Menu tab'. Then, click 'Customize'. You will see 'Customize Start Menu'. In this menu, uncheck 'Sort All Programs menu by name'. Now, you can sort programs in your start menu.