I`m The Maid Of Honor Help!

My best friend in the whole world just asked me to be her maid of honor. GREAT JOY YES!! But then i realized i don`t know anything about what my duties consist of? Does anyone know exactly the tasks i am suppose to be responsible for? I will bend over backward and do anything asked of me i just do not want to forget something important and ruin her day! please help!!!
Posted by Courtney; updated 03/14/07