REPORT DATES: Rookies July 29th, Veterans July 29th SITE: St. John Fisher College, Pittsford, NY CAMP OBJECTIVES: Most of the media focus during Bills camp will be on the quarterback position, where second-year man J.P. Losman will be taking over full-time for the departed Drew Bledsoe. Offensive coordinator Tom Clements is expected to install more plays that take advantage of Losman's mobility, and the entire offense will have to adjust to those changes. New backup QB Kelly Holcomb, formerly with the Browns, must also be indoctrinated in the Buffalo scheme. The Bills will be welcoming a new left side on the offensive line, with free agent pickups Mike Gandy (Chicago) and Bennie Anderson (Baltimore) taking over at tackle and guard, respectively. Defensively, the number one unknown for coordinator Jerry Gray will be the ability of tackles Ron Edwards and Tim Anderson to occupy the slot formerly filled by Pat Williams, now a Viking. In the secondary, Troy Vincent moves from cornerback to free safety, and Terrence McGee must adjust to a full-time role opposite Nate Clements at cornerback. PRESEASON SCHEDULE: at Indianapolis (8/13); vs. Green Bay (8/20); at Chicago (8/26); vs. Detroit (9/2)