if youve been working out and you see no changes you arent using enough intensity and/or are not eating right. eat lots of complex carbs with protein 5-6 times a day, on workout days after workout eat simple carbs + complex carbs + protein each meal, then on the off days eat mainly complex carbs and protein, u should be eating just under a gram of protein per lb of your bodyweight daily, so if you weigh 200lbs you should be eating almost 180grams of protein a day
try that diet with the weight program on hit.dozer.com click WORKOUT you should not need creatine supplement to gain muscle.