At your weight, I suggest that you take a look at a diet called Ketogenic Diet, more specifically Standard Ketogenic Diet. This diet will basically defy everything you've learned in nutrition's class and everything you've heard about the "food pyramid".
The motto of this diet is "eat fat, to lose fat".
Intro
http://www.bodybuilding.com/fun/dorian6.htm
CKD vs. TKD vs. SKD
http://www.bodybuilding.com/fun/sclark91.htm
More in-depth
http://www.bodybuilding.com/fun/cycl...genic_diet.htm
Ketogenic diet related articles
http://www.bodybuilding.com/fun/bbinfo.php?page=Keto
If you have any questions, feel free to PM me as I am currently on this diet as well.