need advice

okay ive been playing football for 4 years in high school and even though football season has ended i was nominated to play in the all-star game but the only problem is, i play center and during the season i was weighing at 280 and now ive dropped to 222 pounds... i need to gain around 5-10 pounds of muscle so i can do well during this game. the game is in 2 months.... my question is how do i make sure the weight i gain is all muscle?

You can't. BUT you can encourage muscle growth by doing fewer reps with higher weights (I assume you are a heavy lifter already, if you're a football player) and making sure you're eating plenty to make up for your lift burn PLUS ~500 extra/day b/c otherwise you're not going to really build much. Cut cardio out of your workout if you do any now. Look into Arnold Schwarzenegger's Body Building Bible and follow the exercise and diet plan set out in it. My boyfriend did it a couple of summers ago and he really put on muscle quickly.

You can't.

Get yourself in the weight room.  Bench, squat, deadlift, do military presses.  The body buildling bible is ok, but its really geared for 'supplemented' people...will it work for you, sure.  Is it the best...feh.  

I would pick up 'the new rules of lifting' by alwyn cosgrove.  MUCH BETTER.  Also has diet advice for you.