hmm, well yes you are correct, but I though I explained that?
Brief synopses. Emulators allow you to play games, the authors ask that you only play game that you own. Many like to download the games from the net. This is technically illegal. Thus, we here can not help you in finding them or we are condoning an illegal act. I will tell you however; google helps, searching helps, and like all bad sites make sure your protection software is running.
If the highlights in bold dont explain it ill let another answer this.