If I want to create new lang file..I know I can edit the existing but my problem is the flag.

Where can I find (edit) or add new flag bmp file?

I would like to try something to create new lang file with the new flag etc. Can I get some directions where to start, how to do it.

I know it is a lot of work but I would like to give it a try just to make igo more international So if I can get some guideline about dictionary translations (lang) files, graphics files flags etc it would be great.

Thank you guys.