/* Outer-Wrapper----------------------------------------------- */
#outer-wrapper{width:960px;margin:0px auto 0px;padding:0px;text-align:left;}
#content-wrapper{padding:15px;background:#FFFFFF url(http://3.bp.blogspot.com/-QPACPv9EzZQ/UR1HrSbJNzI/AAAAAAAAC5M/nsptVHyZObA/s000/main-bg.png) right top repeat-y;}
#main-wrapper{width:460px;margin:0px 23px 0px 0px;;padding:0px;float:left;word-wrap:break-word;overflow:hidden;}
#lsidebar-wrapper{width:270px;float:left;margin:0px 0px 0px 0px;padding:0px;word-wrap:break-word;overflow:hidden;}
#rsidebar-wrapper{width:160px;float:right;margin:0px 0px 0px 15px;padding:0px;word-wrap:break-word;overflow:hidden;}

yukardaki kısımdan 160 ı 0 yap, 460 veya 270 olan kısmıda isteğine göre düzenle.