you must hv pc suit & ur mobile connectin drivers....Go to Control panel> network connection/ create new connection/ set up my connection manually> connect using a dial up modem> nokia, samsung xxxx usb modem> isp name airtel dial up> phon no- *99# username n password leav blank.. Setin fr Init string go to control panel>phon n modem option> modems> nokia xxxx usb modem>properties>advanced. In "extra initialization commands" enter at+cgdcont=,"ip","airtelfun.Com" proxy server setin control panel>internet options>connections>select airtel dialup>settings>check"use a proxy server fr this connection". Enter adress 100.1.200.99 and port 8080. Firefox settings tools>options>general>connection seting>manual proxy seting> enter http proxy as 100.1.200.99 and port 8080