Skype in Windows 7, Minimize to Notification Area Instead of Taskbar

Skype 4.2 windows 7 taksbar, the new version of Skype is stays on the Windows 7 Taskbar when the main windows of Skype is closed like MSN Messenger behavior and its not minimizing to the notification area (System Tray) . Personally i don't like the way it should be in the Notification Area (System Tray). [...]