Doug,
Several good questions here. I will tackle the first 3.
Question 1 how much Protein is enough? I am currently taking in 120 grams a day.
120 grams a day is sufficient but don't forget that complex carbohydrates are extremely imporant as well. So many times people focus on the aspect of protein needs while resistance training and forget about he bodies prefered source of fuel. But again, 120 grams is just fine.
Question 2 I was told by several people at the gym that I belong to that I should start taking Creatine is this safe and will it stop my weight loss?
Since you are resistance training you must start looking at weight loss a little differently. Understand that as you gain muscle tissue you may expereince a drop in the rate of weight loss but this does not mean you are losing less body fat. As you gain muscle tissue fat loss will increase and that is what you are after. Creatine is beyond safe.....it is actually healthy. In addition to helping you build muscle tissue there is also evidence that creatine may do things like lower cholesterol as well. Again, creatine will help you build more muscle and this is good for fat loss. Make sure however that you buy a creatine product that is sugar free. Five grams of creatine a day should do the trick.
Question 3 about half of the gym rats told me I should try I Nitric Oxide Product the other half recommended against what is it and is it safe?
Simply put, NO! While Nitric Oxide products mostly arginine based and are safe for consumption, there is no evidence that they increase strength and/or the amount of muscle tissue in healthy individuals. Anyway, there is plenty of arginine in the protein you consume throughout the day. These supplements are expensive more suitable for erectile disfunction than resistance training.