DJ'ers, i've heard a lot of different theories behind protein intake after workouts. A lot of them are conflicting, so I'll give you the two schools of thought that I've learned......
1/ 30-45g Maximum: Your body is believed to intake and convert to muscle ingested protein after a workout much more effeciently that any other time of the day. However the amount the body can convert at a given meal is not conclusive. Many people feel that any more than 30-45g at a time, is just a waste of protein.
2/ 300-500g a Day: The other thought is to absolutely saturate yourself with protein, ensuring your body has everything it needs to grow. Spread across 6 meals, this could be as much as 83g of protein every sitting. I've read bodybuilders who dismiss theory #1 because the quote "I can't maintain my right leg with 30g of protein"
Personally, i think it comes down to your goals and body type. At a minimum, I would suggest 30g of protein each meal, spread across 6 meals for the day. I think 45-60g of protein, spread across 6 meals a day, would ensure your body has what it needs to grow. Don't forget about digestion aids, branch chain amino's and essential fatty's when doing this!!