The dishwasher is free standing, although you may require a decor panel door for it. It stands on adjustable feet and fits the usual 600mm opening, although there are other sizes. As for removing the existing drawers, they will be in a carcass of their own, fixed at either side with screws to the adjacent units. You may need to be fairly heavy handed to get them out, but as they are usually made from chipboard its not too difficult.
John
October 2009