i ran across this the day on [i:b30k8ya5]ghacks[/i:b30k8ya5], one of my favorite tech blogs. Fast Explorer is software that allows easy customization of the Explorer Context menu. "The free software program is compatible with 32-bit and 64-bit editions of Windows, including Windows Vista and Windows 7. It can be used to add programs to the context menu, and also to remove entries from it if necessary." -ghacks
The author's site no longer has the downloads, but Martin's hosting them on his server.