I have a nokia 1100 - was used in the states on tracfone prepay there so it is locked to their network and has an an airtime counter on it . Anyway Is it possible to flash it to work on any normal gsm network? I am ok with buying a cable and stuff, but I see so many confusing things online with various expensive unlocking boxes etc. I believe it has being unlocked since its not complianing when I put a different sim in it, just doesnt see any networks still. Also, was the 1100 triband? We use 900 and 1800 here, I know its 1900 in the states, is that going to be a problem?