Enable UTF-8 support ?

Hi, How can i know that I use utf-8 as forum language? I do have a lot of Japanese characters in the title of the thread but vbseo can't translate Japanese words into English and replace it in the title which makes my title look weird. Is this function helpful?

Enable UTF-8 support ?

Select 'Yes' to use UTF-8 character set in text-related vBSEO functions.
Do not enable this option if you are not using UTF-8 as your forum language

You should not use this unless your database is in utf-8 also.

There is also one module at apache called "mb string". This is used for japanese chars mostly. Please check if it's intalled. You can get more data here PHP: Basics of Japanese multi-byte encodings - Manual PHP net web site.