please help me,....proxy!

[maddesign]

please test my product,it not working on my server,anyone known about crossdomain please help me,
thank so much !
link Resources
http://www.mediafire.com/?xd1knyodnk4

[maddesign]

                       "http://localhost/proxy.php?url=http: //mail.opi.yahoo.com/online?u="+nick+"&m=e";
            pop            =   "ymsgr:sendim?"+nick+"&m=Hello "+nick;

it's only work on local,please help me create file proxy.php or is other solutions

[maddesign]