Windows 7: setting up a wireless connection.. Help!

hello folks i just got a new motherboard asus M4a78 plus and now my duaghter dont have internet in the basement.. she was feeding off mine cuz she has wireless and pics up my signal from the router that is attached to my computer can someone be so kind in taking my info ans walking me thought this in vioce on msn or ill even call you if i have too.. i refuse to pay some dude 75 bucks to come do something i know is very simple... oh i also have windows 7 and this is a problem for me cuz i never had vista lol.. anyways my email is wes_hoover@hotmail.com add me ill getcha on messenger we can figure out how to communicate thanks