GCN Super Smash Bros. Melee ISO help

[Gh0sti]

i hope this belongs here

i recently got the dolphin emulator and super smash bros melee how do i run this huge file on the emulator cuz i dont see the ISO in the files that i downloaded is there a thing i need to convert inorder to run it

 

[Supersonicmonk]

its probably compressed into a rar or 7z file, either download winrar for rar files or 7z for guess what, 7z files

 

[Ultralex]

and the best is 7Zip also opens rar files!

 

[Gh0sti]

" error loading plugins/plugin_padsimple.dll:cant read info"
"Cant init any PAD Plugins"
"Couldnt init the core. Check your configuration"

those are the errors i get

so do i need like a controller to use this or can i use my laptop keyboard?