LingoWare translates Websites, Emails, Documents and even Applications' GUI from English to Chinese.
LingoWare has a sohisticated translation engine.
LingoWare has a "target" icon that you can drag from the system-tray and drop on any Window to translate it.
You can also drag an English application's icon (that its GUI is in English) to LingoWare window.
When the applcation is opened its GUI (menus, dalogs, buttons...) will be translated to Chinese.