Yes, provided it has the necessary backwards compatibility (like the original 60GB PS3).
yes
No, PS3 games will not run on a PS2 nor a PS1. However, PS3's can play PS2 and some PS1 games - depending on the PS3 model.
no
No, there was no dragon quest game released on playstation3
No, play the game fairly.
a playstation2 should automaticaly read playstation1 games
you cant
maby
The Playstation Network does not charge like Xbox live for online game play
Yes and the game discs are actually Blu-Ray discs themselves
No a PSP does not play any PS3 games it plays PSP games
yes