Dont forget use mozzila firefox as ur browser...
1.Open Mozilla Firefox and klik add-ons at uppper left ur screen or press ctrl+shift+a

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2.After Add-ons Manager show up search FoxyProxy and dont forget to Install (In this Case i use FoxyProxy Standard 3.2)

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3.U can check the add-ons in Extensions (in this part u can also enable,disable,remove add-ons u want)

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4.After Restart ur Mozzila firefox click icon FoxyProxy near refresh button

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5.U will see FoxyProxy window Pop Up,Click Add New Proxy

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6.Just Fill like this pics (if any Pop out windows show up just press ok again) U can get free proxy at http://proxfree.info

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7.Last just change select mode to Use proxy"202.59.200.205:2301" for all URLs then close

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8.Finnaly U can browsing with proxy (Click the FoxyProxy icon and change select mode if u want disabled it)