Diference Between Japanese PS3 n European PS3

Hi ppl i just want to ask about the diference between japanese PS3 n the euro PS3, because, my brother wants to buy one in Hong Kong and i just don't know if i would be able to play in other countries wich uses PAL not NTSC... or this doesn't exist on the PS3???

Thanx stay under cool conditions...

Thanx for ur reply helps me a lot, i don't care much about the EE i still have the PS2 :-) n about the blu ray ill have restriction but i can't do nothing after all i just want to play... if i can play all PS3 games its ok for me about the movies i can download and put inside the PS3 or watch on the PC its ok for me...

Thanx a lot it was very helpfull... Stay under cool conditions...