Hi Christine, I'm Angela, mom to 2 boys, TTC a girl.
There is a theory that if you do the deed ALOT you make a girl. The key to making a boy is to abstain DH (deprive him) for about a week if not more, then do it. Higher sperm count favors boys and lower sperm favors girls. You also want to do it the day before or on Ovulation day. Eat lots and lots of salty foods, chocolate, soda, caffiene. STAY AWAY FROM DAIRY!! Dairy makes your body have an acidic enviroment which favors girls. DH also needs to keep his testies cool. Coolness favors boys as hot favors girls. Have DH drink a caffienated soda or coffee 30 mins prior to ttc. Here is a list of alkaline foods that will help change your enviroment.
http://www.rense.com/1.mpicons/acidalka.htm
Also go to this website and these girls will help you. There is a thread for Y wishers. It will tell you all kinds of things you can do to prepare your body and what kind of suuplements you can take. This board is GREAT!! There has been SO much success. If it weren't for all these girls, then half of the girls that have certain gender dreams wouldn't have had their son/daughter.
http://boards.babycenter.com/n/pfx/f...195&listMode=1
If you have any more questions feel free to ask!
Goodluck!!