Trouble Using Character Sets - Chinese GB2312

Hi,

I am trying to display my site in Simplified Chinese (GB2312). I have verified that all of the files are encoded with the GB2312 character set, when I open them in a language capable editor I can see chinese characters.

I have also used <cfheader name="Content-Type" value="text/html; charset=gb2312" /> at the top of my Application.cfm file.

Yet, when I view the file in any browser, it shows only question marks or odd characters in place of the chinese characters.
When I look at the browser character encoding settings, they are correct (a check mark next to Simplified Chinese).

Any thoughts, am I missing a step.

Thanks in advance for any help given.