you do NOT need a puller... and you do NOT need to do anything special for the air bag EXCEPT unhook the battery for like 20 minutes prior (can you JUST do it 5 minutes before?? MAYBE 10 minutes before??? probably.. but i wanted to be SURE that the air bag would NOT deploy.. so i left is off for 20 minutes prior...)
if you have any specific questions post them and i will try to help