Jean, good for you for doing the rescue route. I have a cat I got from a rescue society, he was about a year old. It took him about a year to settle in, but with kittens it should be faster.

I think you just have to be patient and kind, and see how your kittens turn out. Cats have definite personalities, some more affectionate than others. My boy still runs away when I walk up to him, and is still very skittish in some ways, but he's sitting beside me right now washing his paws while I type, he likes to be close to me. And most nights now he sleeps at the bottom of the bed.

Are they going to be outdoor or indoor cats?