help with upgrading lang file from 1.0 to 1.0 rc 2 or whatever it is

[bigamers.com]

i need help for upgrading that lang file from 1.0 to 1.0 rc 2 or what ever its called how can i do this? i have 2 mods installed on my forums shout box and smf arcade will that effect them?

[Oldiesmann]

Upload all the new language files except Modifications.english.php and you should be fine.