Setting the icon for an entry in the New context menu

Entries in the New submenu of the Explorer right-click menu are generated by ShellNew subkeys in the Registry. One user wanted to know how the icon for those entries is determined. By default, Explorer will use the file type's icon, but this can be overridden by placing an IconPath string value in the ShellNew key. The format is the same as most resource identifiers: the path to the file containing the icon, a comma, and the numeric resource ID. For example, %ProgramFiles%\Windows Mail\wab.exe,10 is an open book icon. Changes to the New-related Registry entries require a restart of Explorer before taking effect.