Old wives tales about gender?

I am in the same boat. I have 2 boys!! My Dr. said there is not too much you can do to get the gender you want, but it is true that the girl sperm live longer, but swim slower, and the male sperm swim fast, but die quicker, so your best bet to try for a girl would be only have a few days before ovulation. Don't do it really close to ovulation because the male sperm will get there first and fertilize the egg and the girls wouldn't even have made it to the egg yet! Good Luck :)