Oh please, let me inform you of the glory of cytogainer.
I started working out early last year with the hope of getting a bit bigger. After a few months or noticing that I was stronger, I hadn't gained any weight or put on any size. In January, I said to myself "Let me try some Cytogainer." So I tried Cytogainer and continued my workout routine. What happened? I went from weighing 145 pounds to weighing 173 pounds in a mere 3 months. As long as you keep your workout routine consistent, you will get stronger and put on the weight you desire. Also, I used Creatine and it pretty much "inflated" me. The only way Creatine will work is if you use it for about a year on and off. If you just use it for 3 months like I did, you will quickly lose what you gained from it. But it still works (to help you look bigger. not to get you stronger.)

Read the label. 3 shakes a day and this six pound container will last you about 2 weeks. It's rather expensive, at $40-50 a container, but that's probably because it works. Each shake has 54 grams of protein. If you are looking to gain weight, you should consume about your weight in grams of protein per day (weight 120 pounds? Get about 125 grams of protein in you per day). Remember though, that high protien diets can be dangerous, so never over-do the shakes. If you weigh 150, don't go around consuming 200 grams of protein daily. It is tough to manage, but diet is much more essential than the weights you can pick up when it comes to getting the body you want.
And yes, as mentioned, it is pretty much just whey protein. If you feel uncomfortable drinking a protein shake, then you can obviously get your protein in you by simply eating. But some people would rather not stuff thier face with turkey, chicken, and tuna 10 times a day in order to get the amount of protein necessary. Suggested times to take the supplement (this is how I did it):
Morning (usually around 9 AM) - Breakfast: Eggs, Ham, 2 glasses of milk, biscuits, oatmeal.
Shake number 1 (usually around 11:30 AM)
After Noon - Lunch (usually around 1:30 PM): Quizno's sandwhich, or any sort of sandwhich. Just stay away from McDonalds.
Workout - (Usually around 4 pm - 6 pm)
Shake number 2 (immediatly after workout -- the most important one)
Dinner (7:30 pm) - again this varies. salads, fruits, meat, milk, and potatoes
Final shake number 3 (right before bedtime, and right after doing a routine of pushups and situps). This is another important shake.
Of course it varies day to day because of class, work, etc. But generally it went something like that. If you are against supplements, try spacing out 6 small but protien rich meals per day. It is probably harder and in the long run more expensive if you choose to buy decent food.