need help with combat arms windowed mode/resolution

ok so i got combat arms eu and when i load the game it comes up "invalid format" but i tryed to change settings through Nvidia manger still didnt work but when i found a window mode hack the windowmode.ftl and Ca.ini (config settings) it opened fine and played the game but the hack must have been old because after 2 mins it closed down and loaded ending banner any one who can help me with this? and i looked in the windowed mode post before i started this it just "you need to download a hack /solved and closed" thats Great help aint it........tell me when i cn Get it and how