Emulators For PS2

i was looking at some websites that had emulators for the ps2, i downloaded the nes emulator, and made the iso file, i used nero to burn it to a cd-r with the cue that it also produced, i put it into my ps2 and it said it was an invalid disc, :cuss2: that was one of my last cd-rs, n e 1 know y this didnt work, sorry about spamming my last post (i didnt mean 2, i just wanted an answer fast) n e ways, thx 2 n e 1 that helps.