first gear running out real quick!

My first gear is almost non existant... i am in first for a about 1 to 2 seconds if i change my sprockets will this help the kid i got the bike from put a smaller sprocket in front and a bigger one in back... If i get a smaller sproket for the back is that gonna help me... feels like the bike is not getting 2 much in the hign end of the powerband.... let me know what ya think
 
I'd go with a 14 up front and 40 in the back like specialized said. When you are ripping on it first is really short anyway but changing the sprockets should help out.
 
My first is the same way... pretty much nothing... it's practically a 5 gear quad.