first of all what bb is it? if its an some thing like an echo, you will need the echo bb tool. if its just a normal bb the you will nee one of these then the driveside cup screws in with a "normal thread" (lefty loosey, righty tighty all that shiz) and the non drive side has a reverse thread, so you twis it the way you would normaly tighten something, then do what ever you need to do while its out, clean the threads in the frame, and on the bb if you putting the old one back in, put a little grease on the threads and srew it back in, make sure you put the right cut in the right side. make sure you don't cross thread it either, the cups should go practicaly all the way in thiw your hand preitly easily, then give them a good tighten with the tool, the they wont screw in by hand chances are your either cross threading it or trying to put the wrong cup in the wrong side. hope this helps.