Are emulators illegal?

I want to play games at school but I dont know which one works da best

how do you use gameshark codes on an emulator ? I've looked , but google didn't have the answer

All my games on my ps2 are cant be read and I was wondering if anyone knew where I can get some ps2 games off the internet no...

I downloaded the zsnes emulator for my pc and some games for it but I dont know how to use the games or were to put them to ...

what the heck is an emulator rom ?

where can I find a website where I can download a nintendo 64 emulator ? thanks !

does anyone know a ps1 emulator? and a working ff7 rom? I've looked everywhere and nothing works.

I'm terrible but learning, so I'm actually winnning a little bit, will I be sent to jail by the irs or the fbi or the cia? I ...

How and were can I download pokemon diamond and pearl or just one of them for my nds emulator I have an ideas nds emulator an...

Can someone please tell me a website that lets you get free psp games pleaseee and emulator for nintendo 64 on your psp