im trying to make a game thats a 2 player sub shooting game

sub1 at 1 side and sub2 at another

keys are W,A,S,D for sub1
and up, down, left, right for sub2

the problem is, it wont work when u press 2 keys at the same time

it gotta reconize all keys simultaneosly

how????

please email me at [email protected]

thanx alot