so, within the next week or so, i'll be buying a new powerbook. i want to get a bluetooth mouse for it, and right now i'm leaning towards the apple one. a single mouse button really isn't a detriment to me, so i'm not too concerned about whichever mouse has 12 buttons, 3 scroll wheels and a drink holder. however, i was wondering somthing- i plan on taking the mouse around with me with the powerbook, and turning it off when not in use to conserve batteries. however, every time i turn it back on, do i have to set it up again, or will the powerbook automatically recognize it every time?