For example: The Canada flag would be *ca*
USA - *us*
Japan - *jp*
Finland - *fi*
Fiji - *fj*
Just type the codes as above then hit space and the flag icon will appear.
I found a website with all the country codes here: http://www.modemsite.com/56k/_ccodes.asp
Not all of them work in BBM. Most do, but I know for sure that Christmas Island (yes, that is a country) and Western Sahara do NOT work.
Sent from my BlackBerry 8900 Javelin.