I accidentially broke off one of my MBP's keys while trying to reach a little piece of tissue that fell under it. The way it came off the two white brackets were attached to the laptop itself. Underneath the key I saw several cat hairs sticking out, so I plucked off a couple more keys and even more cat hair (we're talking LOTS). Each one I plucked off kept the two white brackets attached to the laptop. Well, this was all fine and good until the smaller white bracket on one of the keys fell out of its position. I tried everything to get it back in, placing it back onto the key itself. For about a hour I fiddled until I tried to get it in by placing the larger white bracket in the silver holders on the laptop and trying to "shove" the key (with the smaller bracket attached) into it. This broke off the little rubber "nipple." I called my local non-official Apple repair shop and they said they would have been able to re-attach the keys for free but the loss of the nipple, though they have to see it to be sure, may require the replacement of the the entire keyboard (70 dollars for the keyboard + 90 for the labor) . Does anyone have any experience with this matter and could shed some light on whether the nipple can be reattached?