every time i either rev my engine or actually step on the gas, the dash board right near the winshield starts to rattle.
what can i do

 

Without knowing a lot more info....

If your car is still under warranty take it back to the dealer. If no, try and isolate where exactly the rattle is coming from.

Try and push down on different spots on the dash to narrow it down.

Oh and have you recently taken your interior apart?

Post back what make / model / year you have.