google it there's plenty of e'm
and remember you can only download games you actually own
there's a small guide on this page on how to make them work http://www.emutalk.net/showthread.php?t=47565 don't pm me with rom requests they'll be swiftly binned rules and all
oh and for your problem try this
go to config(assuming your using demul) go down to where it says gd-rom right click
and where it says popup this window take the tick out of the box that should solve that problem