Need help with nes roms

When I extract the .7z file after downloading a NES ROM (ex. Super Mario Bros.) it comes up with a zillion random files that are slightly related to the ROM I'm trying to get. And I can't seem to find the right file that I need for the specific game. All I find is stuff like "Afro Mario Bros" or "Super Mario 5000"...I need hellllpp!

try the one with (!) in the name

ok thanks i think it worked..if it doesnt though, could someone else give some other advice?

the ones with the weird names, i believe they are hacks made by random people; they are not the original game. they LOOK like it, but the levels are different. some of them are quite amusing though ;D (ie. Super Mario World compared to Mario Legacy)

Just get this one, exactly:Super Mario Bros. (JU) [!].nes