Keeping it in the family - legacies

[SBROWN]

My little brother will be attending college next Fall and I'm hoping he'll decide to go greek. I can't imagine my college experience without it and I want him to experience it as well. He will not be attending the same college and it isn't important to me that he join the same fraternity - however there is a chapter at the university he will be attending (and it happens to be a great chapter). I would like to know the etiquette or procedures for helping him out in the rush process. I have good friends who are all alumni of different fraternities, would it be a good idea for them to make a call or send a letter to the other houses on campus? Are rec letters even helpful and how do fraternities view legacies of other houses? I have no doubts that he would do just great on his own but if I'd love to give him an advantage if possible.