No specific info about version 3.7. Please visit the main page of Yandex taskbar button on Software Informer.
Taskbar Shuffle is a nice application that allows you to order your taskbar.
Taskbar Button Manager lets you arrange the buttons down on the taskbar
Taskbar Activate allows one to access the taskbar anytime.
Add important icons to Windows 7 taskbar for fast access.
Titanium Taskbar allows you to modify Windows Taskbar easily and effectively.
Set up rules to automatically place buttons in your preferred order.