Taskix is a free Windows utility that lets you organize and rearrange taskbar buttons. Works with Windows XP and Windows Vista (32 bit and 64 bit)
How to Start It
Each ZIP contains 2 files: an EXE and a DLL. Extract them and place them together in one folder of your choice. The EXE allows you to activate and deactivate Taskix and to specify if you want it to be automatically activated when you start Windows.
How to Use It
Simply drag-and-drop the button you want to move. Note that if "Group similar taskbar buttons" is set, you will be able to move a button inside the group or move the group as a whole, but not to move a button out of its group. If you open many windows so buttons end up stacked up on a single taskbar button - Taskix will also work inside the stacked button list.
Download