Jacinta, <br>even easier,log in to the machine using safe mode and type in the run prompt 
&quot;msconfig&quot; and disable the &quot;suspicious programs. yours in this case is 
most likely a  .vbs script running.look for a file or also blank under the
 startup item tab.Exercise extreme caution as any changes you make here 
may force you to repair your OS if you dont know how to undo them.<br><br clear="all"><br>-- <br><font style="font-family: comic sans ms,sans-serif; background-color: rgb(0, 0, 0);" color="#003366" face="Verdana" size="2"><span><span style="background-color: rgb(255, 255, 255);"></span></span><span style="background-color: rgb(255, 255, 255); color: rgb(0, 0, 0);">A negative thinker 
        sees a difficulty in every opportunity,A positive thinker sees an opportunity 
        in every difficulty</span></font><span style="font-family: &#39;Trebuchet MS&#39;;"></span><br>