magento:IP SPECIFIC LANGUAGE

 First download currency switcher from   
 http://www.magentocommerce.com/magento-connect/auto-currency-switcher-8671.html  
 //CODE TO DISPLAY LANGUAGE ACCORDING TO IP ADDRESS  
  if(Mage::getConfig()->getModuleConfig('Chapagain_AutoCurrency')->is('active', 'true'))  
  {   
                $geoIp = Mage::helper('autocurrency')->loadGeoIp();  
                $ipAddress = Mage::helper('autocurrency')->getIpAddress();  
                // get country code from ip address  
                 $countryCode = geoip_country_code_by_addr($geoIp, $ipAddress);   
                 $germancountries=array('CH','DE');  
                if(!isset($_COOKIE['frontstoreloc']))   
                {   
                 //$siteurl= $this->getUrl();  
                 $siteurl= "http://".$_SERVER['SERVER_NAME'];  
                      setcookie("frontstoreloc",session_id(),time()+60*60*24,"/","");  
                     switch(trim($countryCode))  
                     {  
                           case 'CH':  
                                    $url = $siteurl . '?___store=german';  
                                    header( 'Location:' . $url);die;  
                           break;  
                           case 'DE':  
                                         $url = $siteurl . '?___store=german';  
                                         header( 'Location:' . $url);die;  
                           break;  
                           case 'IN':  
                                     $url = $siteurl . '?___store=english';  
                                     header( 'Location:' . $url);die;  
                           break;  
                           default:  
                           $url = $siteurl . '?___store=usa';  
                                     header( 'Location:' . $url);die;  
                           break;  
                     }  
                 }  
            }