Cambiar el ancho de este chat

[ChatDelMundo]

-En que parte puedo cambiar el ancho donde esta señalado en rojo.

-La parte donde salen los usuarios como hago para que esten en el lado derecho?

Código CSS:

#arrowchat_popoutchatbutton{display:none}
.arrowchat_popin_icon{height:17px !important;width:17px !important;background-position:-223px -44px}
.arrowchat_popout_icon{background:url(themes/<?=$theme?>/images/bg-core.png) no-repeat top left;background-position:-81px -45px !important;text-align:left}
#arrowchat_popout_wrapper{width:100%;height:100%}
#arrowchat_popout_friends{position:absolute;width:220px;top:0px;bottom:0px;padding-top:3px;border-right:1px solid #AAA;background-color:#E2E2E2;overflow-y:scroll;height:auto !important}
#arrowchat_popout_chat{background-color:#E2E2E2;left:221px;position:absolute;right:0px;top:0px}
#arrowchat_popout_open_chats{background-color:#EDEDED;bottom:0px;left:221px;overflow:hidden;position:absolute;right:0px}
#arrowchat_popout_container{border-top:1px solid #AAA;padding:0px 8px 3px;display:block;zoom:1}
.arrowchat_popout_wrap{padding-right:5px}
.arrowchat_popout_tab_name{white-space:nowrap;font-weight:normal;float:left}
.arrowchat_popout_tab{color:#666;cursor:pointer;float:left;margin:0px 1px 3px;padding:3px 5px;position:relative;z-index:1005}
.arrowchat_popout_tab_close{cursor:pointer;opacity:0;outline:none;padding:18px}
.arrowchat_popout_right{float:right;margin-left:3px;margin-top:3px}
.arrowchat_popout_focused{-webkit-box-shadow:rgba(0,0,0,0.0898438) 0px 1px 0px;background-color:#fff;border:1px solid #AAA;color:#333;margin:-2px 0px 2px;padding-top:4px}
.arrowchat_popout_convo_wrapper{display:none}
.arrowchat_popout_convo{overflow-x:hidden;overflow-y:auto;padding-top:5px;padding-left:25px;padding-right:25px}
.arrowchat_popout_input_container{margin-right:52px;margin-left:20px}
.arrowchat_popout_input_wrapper{position:relative}
.arrowchat_popout_convo_input{border:1px solid #AAA;border-top-width:2px;font-size:13px;overflow-x:hidden;overflow-y:auto;padding:5px;padding-left:25px;width:100%;background:url(themes/<?=$theme?>/images/bg-core.png) no-repeat top left;background-position:5px -173px}
.arrowchat_popout_convo_focused{display:block}
.arrowchat_popout_alert{background:#FF0000;border:1px solid #D90000;border-bottom-left-radius:2px 2px;border-bottom-right-radius:2px 2px;border-top-left-radius:2px 2px;border-top-right-radius:2px 2px;color:#FFF;font-size:9px;font-weight:bold;margin-left:2px;padding:1px 3px;float:right}