Increase your protein intake and lower fats and simple carbs. try not to consume carbs after 6pm, and swap rice for brown rice, and new potatoes for jacket potatoes. Also do you take any sports supplements? Protein shakes etc? For meal plans as well as advice on exercise programs I reccommend you having a look at
Muscle Building & Natural Bodybuilding MegaSite & Community On there you'll find all types of meal plans for your goal, and there's forums were you can ask advice! hope that helps