Hello, I don't have windows 7 so I can't details the procedure, but you should go in your control panel->regional and linguistic settings and look for the different options inside you could check.
Basically on windows XP I have to check an option that extend the support of chinese input inside bloc-notes and files of that type.
Might also be that your default local isn't set on Chinese either, can also be changed under regional and linguitic.
When you log on a realm type "/join english
" to get in touch with the community members.
WoW English/Chinese glossary
(2000+ translated words) found on wow-in-chinese.jfs-web.chEnglish speakers are consolidating on the same realm for Cataclysm check this thread