XWindows Dock 5.6 Full Pack
Dock in Mac OS X Leopard + 140 themes | 104 MB
Xwindows Dock is a free application that adds an Apple Leopard OSX-style dock to the windows desktop. If you haven't used it, the Apple dock is the Mac version
of the Windows taskbar. The dock is one of the major difference between Windows and OSX and if you really can't live without it, Xwindows Dock might be a suitable alternative.