How can I introduce my 22 mth old to his new baby brother or sister?

I've just had my second baby (three weeks ago) and my daughter was just 20 months when the baby came along. She's been good with the baby but very demanding on me recently. Anyway, get your son to help out as much as you can, get him to comb the baby's hair, wipe the baby's bottom with a wipe when you change a nappy, just little things that make him feel as if he's being a big help to his mum. My toddler is clingy now too so if you can, try and get someone to watch baby while you spend maybe an hour a day with your son just so he knows that he's still special to his mum and when you bring the new baby home, get your son a present, something he's been wanting or something you know he'll love and say that it's a present from his new baby sister/brother. The first couple of weeks haven't been easy for us here but I know it will get better and my toddler loves giving her baby sister lots of kisses. Good luck ;-)