Not to hard a job, remove wheel, brake caliper and disc, drive shaft outer hub nut, btm ball joint pinch bolt, track rod end. Lever down the wishbone to release the hub from the btm ball joint and pull the hub outwards off the outer cv joint. Undo the two strut to hub bolts (mark these to keep the camber settings)and remove the hub. Press out the drive flange then press out the bearing. Press the new bearing in and rebuild. If you do not understand the procedure, I would recommend entrusting the job to someone who is competent because this is a critical component on the car.
Steve.