We had our second baby when our son was 26 months old. We didn't do anything too special. We got him a "Big Brother" book that we read to him daily towards the end of my pregnancy. It was all about how fun it is being a big brother. My mom came up to stay with him for the C-Section and she kept him to his same routine, which I feel is very important. Not once has having the baby caused his routine to change. Meals, bed time, bath time, naps, etc all remained constant. Obviously we were talking it up to him for a few weeks before hand and told him all about the baby and how she would be his very own little sister, etc. I don't know how much he understood as he isn;t very talkative, but the end result has been wonderful. My parents brought him to see us in the hospital. He walked right in and announced "Hi Mommy, Hi Daddy, Hi Lucky Baby!" (Her name is Lexi so he pronounces it as Lucky.) He accepted her as part of his family immediately. The same thing happened the day we came home. He loves to watch us take care of her and to give her kisses. The only thing we have to watch out for is him trying to make her play with his toys. He tries throwing his cars into her crib telling her, "Lucky Baby play cars!" All of my friends with two have said the same thing. I think that for the most part, older sibs really do quite well. I woudl guess the problems kick in when baby is getting into the older child's stuff!