[Résolu]Live messenger virus

Bonjour,

J'ai un virus un peu enbétant qui met sa:<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>404 Not nd</title>
<style type="text/css">
<!--
#principal {position:a olute; width:740px; height:450px; left: 50%; margin-left: -370px; margin-top: -225px; top: 50%; }
body{font-family:Verdana, Arial, Helvetica, sans-serif; color:#666666; font-size:10pt;}
h4 {font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 9pt;}
h2 {font-family: Arial, Helvetica, sans-serif; font-size: 13pt; font-weight: bolder; color: #4f4f4f; text-align: center;}
h3 {font-family: Arial, Helvetica, sans-serif; font-size: 13pt; font-weight: bolder; color: #429C29;}
a {color: #429C29; text-decoration:none;}
a:hover {color: #006600; text-decoration:underline;}
.agradecemos {font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 10pt; color:#49A031;}
.report {font-size: 8pt;}
.input {font-family: Verdana, Arial, Helvetica, sans-serif;font-size: 9pt; background-color:#FFFFFF; color:#666666; border: 1px solid #429C29;}
.botao {background-color:#429C29; font-family: Arial, Helvetica, sans-serif;

Dans tt mes fenétres de conversation.

Ma question est comment m'en débarasser?

Car on ma dit que sa le transmetter aux autres ce dont je doute.