The TINA coregistration tool automatically calculates the rigid transformation required to align two images or image volumes of the same scene. For instance, if two MR volumes of a subject's brain have been acquired during different scanning sessions, then the coregistration tool allows the user to automatically calculate the transformation model required to align the volumes, allowing direct regional comparisons. The tool is divided into two panels: the ``simple coreg tool" and the ``advanced coreg tool". The results of the alignment are displayed in a dialog box, the ``AIR Parameters Dialog Box". Coregistration results can be stored in binary AIR files: the format is compatible with an automatic image registration program called AIR.