Playing on an emulator

[Aide]

Does anybody know of a good emulator that lets you play DS games on your computer?

[Dark Scizor]

I know one that you can play Diamond and Pearl on at least.

But it is laggy to the maximum.

[Roarkiller]

You do know that asking for roms or emulators is illegal.

Please don't ask for the reason. It's pretty obvious.