Ní hâo Jiabao,

rènshi nǐ hěn gāoxìng.

The following page should contain all the information you need to
start translating:

http://wiki.inkscape.org/wiki/index.php/Translation_information

However, before you start translating, Chinese already has a
translation team, so first thing to do is to contact them and
coordinate your efforts with them to prevent a situation where you
both work on the same thing at the same time. The last translator of
the user interface is Liu Xiaoqin <liuxqsmile@...5...>.

Gōng xǐ fā cái.

Regards,
~~helix84