Sounds like an East Asian language got enabled on your system. "Latin" just
refers to the type of script, so that's the box you would use for English and
other languages that use a-z A-z type alphabets.
You can remove the Asian language support (assuming you don't need it) by
going to Start->Programs->Microsoft Office->Microsoft Office Tools->Microsoft
Office Language Settings. In the Enabled Languages tab, select languages
from the enabled column that you don't want and click Remove. You need to
restart the apps for it to take effect.