I have done some research about Ascension Island. It's under British administration, and you see Union Jack in upper right corner of the islands main page on web. There does not seem to be a separate flag for that island. I have checked several pages. So I suggest you use the Britsh flag for that island. (Anyway, if you do it, and it's wrong the risc for someone comming after you and want to chop your head off for doing that is very small, due to the size of the population on the island ).
Thanks you, John Hjorth I updated this MOD to version 0.3.0. This version fixed many bugs with country flags for groups. uhm, now, all things are working fine. I moved language vars is used in acp_flags file to language/en/mods/flags.php. Thanks for any translation this MOD of everyone. http://en.wikipedia.org/wiki/ISO_3166-1 After I completed countries-database for this MOD, it will have a PHP file auto-update SQL.