Welcome to the forums Mike.
I am quite tired (it being 3.45am) so I'll try to keep this short & sweet
I'll do dot points to make it easy to follow
* A perfect diet that is strictly adhered to (Heavy in carbs, proteins & good fats)
* Possibly a weight gaining supplement from a health food store like GNC for example
* A heavy weights program, focusing on compound exercises like chin ups / bench press etc
* Spread your workouts thru-out the week, Mon-Wed-Sat for example, never 2 days in a row
* No less than 8 hrs sleep a night, muscle growth occurs while you sleep
* Don't do as much cardio, it makes it a lot harder as you are constantly burning everything off.
Good luck mate.