Configuring Handler apps


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Hi,I'm from BD.As a result,the tricks in handlers for free gprs don't work in my country(I think).However,my ISP give me free access to some sites like with the opera mini installed with the ISP logo(network).But using homepage as and using some other proxy sites e.g. as proxy server I can browse freely with my default phone browser.But I can't configure the handler to use the free trick.Can anyone please say whether it is possible to freely browse in handler like my default browser?If so then how can I configure the proxy servers? And the http server in handler? What about the front,back,middle queries?
My phone's model is NOKIA C2-01
Thanks for help!