Starting with Windows 7, Windows Installer enables native support for setting properties on shortcuts created during installation or re-installation. The MsiShortcutProperty table can be used to set any property defined by the IPropertyStore interface.
Read further -
Windows Installer Team Blog : Windows 7 Taskbar support with the MsiShortcutProperty table
Read further -
Windows Installer Team Blog : Windows 7 Taskbar support with the MsiShortcutProperty table