Methods of using ablation device and of guiding ablation device into body

A method of using an ablation device to ablate tissue at a desired location, wherein the ablation device comprises: a pair of floating jaws moveable between a spaced apart open position and a closed position, the pair of jaws comprising at least one ablating element for ablating tissue located between the jaws; a handle comprising controls for remotely controlling the movement of the jaws and the at least one ablative element; and a flexible neck connecting the jaws and handle, wherein the neck is flexible so as to permit the jaws to be maneuverable in the body with respect to the handle; the method comprising the steps of: providing the ablation device; delivering the jaws to a desired location; positioning the jaws in the open position around tissue desired to be ablated; closing the jaws to the closed position on the tissue by using the controls on the handle portion of the ablation device; and activating the at least one ablating element by using the controls on the handle portion of the ablation device and ablating the tissue. A method of guiding an ablation device into a body wherein a guide member may be attached and reattached to the ablation device as needed. A method of ablating the pulmonary veins in a heart of a patient.