XWindows Dock 5.6 Full Pack
Dock in Mac OS X Leopard + 140 themes | 104 MB
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.