I came across this very old post while bored and browsing. Normally I would not bother with these old posts but I feel this one needs updated.
Please do not give cats and kittens cows milk. Most cats are lactose intolerate and do not handle milk well. If you insist on giving milk please use a milk replacement, available at most good pet stores, or cat milk from the store. Please do not make it a main part of their diet as it does not meet any nutritional needs of a cat or kitten.