Make wordpress use gb2312?

Hi,
I am working on setting up a wordpress-site where the information will be in chinese. I have gotten information from the person in china, who will be entering the information, that they use gb2312 character encoding. I am working from norway, using utf-8, which has until now lead to us only getting gibberish on the website when viewing it here, while it has looked “correct” in chinese.

Also – when I recieved a word-document with the chinese text, and I copied/pasted this into wordpress, it worked both here and in china, but when they enter the text themselves, things look correct there, and gibberish here.

I have tried now to set it to

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'gb2312_chinese_ci');

/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', 'gb2312_chinese_ci');

in wp-config, but am unsure if this is correct?