If you\'ve noticed in the Windows 7 beta, if you copy files or other system actions, the windows explorer icon in the taskbar will fill up with a green progress bar equivale
I found a beautiful article (Link) that provides a simple solution to the taskbar progress bar problem. In summary, it instructs you to download the Windows API pack from the MSDN website, adding a reference to the Microsoft.WindowsAPICodePack.Shell.dll that it contains, and finally add three lines of code to your application:
Imports Microsoft.WindowsAPICodePack
Imports Microsoft.WindowsAPICodePack.Taskbar
// ...
TaskbarManager.Instance.SetProgressValue(X, 100)
where X is the progress you want to display.