I have zencart 1.5.1 store build already and would now like to add Thai as a second language. I've been searching online/forums but most information seems to either be specific problems, or isn't consistent between the zencart version and/or not entire answers. (ex, adding Thai, but no mention to if it's a second language or only in thai, etc)

Currently I can't write in Thai next to the English as a short term fix without getting question marks. I've set the php database to utf8_unicode, but not sure where to go from there.

Seeing how any posts are a couple years old and older version hoping there is a more direct answer to do this vs just fighting specific problems other people have been through until hopefully it works out in the end. Guess I'd like to do it right the first time if that make sense...

Greatly appreciate any pointers in the right direction. I've used Zencart multiple times, but this is the first language change I've had to do.