De-Branding and Adding Language to 6288

Hi guys I'm new to this forum But not new to forums.

I'm looking into De-branding my mums Nokia 6288 and adding Russian Language.
Now since iv only ever done this sorta stuff to my own W850i, I was wondering maybe somebody would have experience with Nokia phones.

I Pretty much need a full out explanation on what software to use and where to get firmwares and language packs, Unless like SEs the language is dependent on the firmware type.

All i know about the phone is that its Locked to 3 Mobile and its a 6288 lol
Sorry if its not much help but i don't really know how to check a Nokia's Firmware details and such.

Help would be much appreciated.

this is sonyericsson not nokia forum

Well i don't really know what Forum to goto, I don't want to go to an official one because obviously asking questions like this nobody there would probably know.