Off the top of my head, side (thorax) airbags on the seats are standard equipment, whilst the curtain airbags (in the pillars) only come on the Lux and other non-standard models (i.e. Limited). If there are airbags in the pillar, you'll see an SRS airbag logo on the front and rear pillars.
MingZai, I'd be very careful with the insurance/legality issues, and would study the PDS very carefully - just because an insurance company has OK'ed the mod, it does not make it legal. I believe that in many cases, the insurers would have some sort of clause saying that insurance may be void in the case if the car is not roadworthy/has illegal mods. And from my understanding, removing an airbag of any sort is very illegal!