Japanese chars output as "?" or garbage val in rails app

In my rails app the japanese chars output as “???” or garbage
value. I
have searched the forum get some help but I am not clear about the

I use InstantRails 1.4, In the package mysql version is 4.1.9.

So please help me in the points

0.What will be the mysql(version 4.1.9) collation? (I used

  1. any change in database.yml configuration?

  2. What will be the charset in html meta tag?
    suppose I have

    is it right?

Any other changes need? Because I am new in Ruby so can not understand.