I was planning on rushing this fall at UCF, however after reading some threads I feel as if I am not prepared yet to rush for fall.

I have read that UCF is moderately competitive so I feel as if I need letters of references in order to be introduced/noticed better. I am a little confused on how to get an alumnae to right a recommendation for me. For example: I went to Chi Omega's website and clicked find a alumnae chapter and then came to this website of a listing of chapters in Florida and then I clicked on Central/Orlando FL Alumnae and it popped up this website
http://ww2.chiomega.com/alumnae/content/?chapterID=3275
Next, do I go to contact us and email someone from that list to write me a recommendation or am I doing this entirely wrong? Can someone explain what I have to do? I am a lil confused.
2) If I decide not to rush in fall, around what time does UCF do informal rush?
I am a sophomore right now, but will be a junior in the spring. My GPA is average. I have a 3.5 and was involved in a lot of extracurricular activities during my high school years, but I dont know how much effect that has on the sororities at UCF. I am going to ValenciaCC right now, but I cant say I did anything at Valencia besides trying to get good grades. I wish there was a better way to be more involved in my community college, I hope this wouldnt affect me getting into a sorority. lol
I am open to any advice anyone can give me. Thanx!