ps on ps2

[zipme]

hi all.i searched through the forums but found no answers so can anybody help?i want to play all my ps games on my ps2 but it will simply not load no matter what i try ..i dont think its because of pal/ntsc as i can play pal dvd-r and even so i got some jap copies but they still wont load..is there a certain boot method for ps games?i'm sorry if someone has posted this before and if they have can any1 point me to that post.thanks
jap v.30000
arv.2
neo 2(i think)