The first You login to your Adsense Account, click Account Settings, Click on Payment Details [Edit]
And then modify like it:

Choose Form of Payment: Please note that changes to your form of payment must be made by the 15th of the month to affect the current month’s payment cycle.
Click on Continue.
In order to ensure that [...]

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Payment by Western Union Quick Cash is currently available in the following countries and areas:

Argentina
Barbados
Bolivia
Bulgaria
Chile
China (Mainland)
Colombia
Dominican Republic
Egypt
Guatemala
Indonesia
Lithuania
Malaysia
Morocco
Nepal
Pakistan
Panama
Peru
Philippines
Romania
Taiwan
Uruguay
Vietnam

Have a good news for Publisher VietNam, I have some friends live in there, I hope they can earn a lot money from Google adsene.
Via: Google Adsense Blog

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