Dolphin is the best by far, but there are not many Gamecube roms (ISOs)
No because the Dolphin Emulator is for Gamecube and Wii games. With a hacked Wii/Gamecube you can load up a homebrew emulator which is the VBAGX which is essentially no different than the Visual Boy Advance emulator for PC/Mac. If you want to load GBA roms download the Visual Boy Advance emulator.
If you have your ISO game ROM downloaded and ready to go, just make a folder in the directory that you have Dolphin in called "Roms", and from there I'm pretty sure you can set that folder as the default folder.
The project 64 is a Nintendo 64 emulator that lets you play Nintendo 64 games that you download from websites.
For gamecube theres 128bit.me, haven't had any problems from there so far as long as i stick to the confirmed ok ones. Not sure about wii games.
Jovan Roms was born in 1981.
No, only SNES ROMs work on SNES. You need a NES emulator to run NES ROMs.
Downloading ROMs for games that you do not own is considered illegal. Legal options include creating your own ROMs from games you own or getting ROMs from legal sources.
You can not download legal video game roms.
well... you can only play gameboy color roms with lameboy, you can play nes roms with nesDs, sega roms with jEnesisDs or apprenticeminusDs and SNES roms with SNEmulDS
Hacks are distributed as patches, which you apply to the original roms. You get the original roms from your cartridge using a special tool.
MAME Roms are new emulator applications for video arcade games to make them operate better. MAME Roms stores a lot more memory and history than other Roms.