Abstract: A directional or horizontal hole may be drilled into a formation by first positioning or orienting a window turning shoe in an original well bore. Once the window turning shoe has been positioned, a window is milled through the casing with a window mill. The window mill is then removed and a guide tool is then latched to the window turning shoe. Once in position, the guide tool enables a mechanical motor driven curve drilling assembly to create a curved hole. Following the completion of the curved hole, the directional or horizontal hole is extended with a conventional drilling assembly.