Hai everyone i purchesed Crysis 2 Limited Edition the day it was released and i have it installed. since the serial key in use problem was with me, i browsed the forums and all i saw was change one piece in the key and it would work. so i did just that and it worked. now that the patch fixed the problem i cant play. my mom literly cleaned out the whole house and ever since then i couldnt find my cd key. is there i way i can find it through registry or a cd key finder or a good way to find the key. help please im having a reformat this weekend and i want to be able to play Crysis 2 without buying new copies or new keys.