Well, For the past hour ive been trying to add optifine to the mod,
i've put the optifine jar in the /mods/ folder and the game shows no optifine,
ive tried OptiFine 1.6.4 HD U C6 and OptiFine 1.6.4 HD U C8 both of them dont load with the game,
ive also edited it ,jar and deleted the meta-inf to see if that work work but it still doesnt.
im on windows 7 64bit