need some help

[ecstatica]

a friend of mine got some psx isos to play on the pc via an emu.. anyway i want to no is there anyway i could burn em on to a cd to play on the psx system my psx does have a mod-chip ... some 1 tould me to just burn the iso on to a cd with the use of nero .. so i did that but when i try to load the game on the psx all i get is dark text sayin (Playstation) then after about 5 min it get's light .. then a lil tune starts to play and that's it ... after that it doesnt do anything ... then i got tould to try and load it up with the use of a game shark ... and i still got no joy with it ...thanks alot to any 1 that can help me