You said it!!Actually a simple google will get you to the emulator you want my friend and yes ps2 emulation is true and has a great compatibility list going on. Granted its not the best emulation, but if you are so desperate just buy a 50 dll ps2 and modify it to run pirated copys.
If you have the original games you should be fine with a 50 dlls ps2 or your ps3 with backward compatibility, I just dont get it why people will ruin their excelent machine to run copys of ps2 games. And another thing a lot of games are multiplatform so you can get a pc version instead of a ps2 version and run it with a gamepad.
I only have 2 things hooked to my LCD TV and thats a ps3 for my gaming needs and a full computer running hackintosh that covers my media files. Im running plex a modified xbox media center for mac os x