noob question, please help a veteran gamer

ok, so i am not new to emu gaming. When it comes to ones that use the old cartridge technique..... now let's say i wanna do something different and play on a emu for gamecube...I got a dolphin, i set up the settings, website, so say i dl a game from this website for it, how would i go about opening it up in the emulator. :psyduck:

Extract the Emu to something like c:\emu\wii. Then create a folder called cds or roms underneath, then extract the iso to that folder. Start dolphin then click on Browse, point to the Roms/cds folder. then click on the gcpad and configure it. Then double click on the Iso, to start the Game