Becky Cabaza, executive editor for Fireside, Touchstone and Scribner Paperback Fiction, will join Crown Publishing's Three Rivers Press November 1 in the newly created position of executive editor. Cabaza will report to Linda L wenthal, v-p and editorial director of Three Rivers, who told PW Cabaza's appointment "reflects Crown's commitment to expand the trade paperback publisher. We will be doing more aggressive marketing and will also be more aggressive in making acquisitions."