replacing air bags?

Unfortunetely I had a run in with a tree this weekend and although there isn't significant damage the air bags popped. Does anyone know what is involved in replacing the air bags? Where is the best place to buy new bags? Any information you have will help. thanks.
ps: it is a '99 V6 2-door

Checkout EBay for air bag parts. Unless you have experience it is highly recommended not to do air bag work DIY. A GM service manual would be helpful too. Safety precautions must be followed. Also, after replacing the air bag modules you will need to get the SDM module reset or replaced to clear the air bag light.