Hello everyone I needed help with my raspberry pi2. I am very new to this and just purchased a pi 2, usb famicom controllers ,16gb Samsung class 10 micro sd card and usb keyboard and mouse. so I wrote the image on the sd card everything boots up, freeware games work, controllers work etc... but when It comes down to loading my roms they do not work. this is what I am doing. I pick the rom sets that I like lets say Atari 2600, sega mastersystem, sega 32x, nes, snes. I download the roms sets. I use 7zip manager and unzip the files and save them. Then I go to cyberduck and use ssh file transfer tool, Home>pi>retropie>roms I click and drag the corresponding folders and drag them into the folders. I reboot>sudo reboot the pi boots up into emulation station but the games don't appear out of the ones mentioned only Atari and sega 32x images appear, click on the icon and there is 1 file , I clik on it and it reboots to the prompt screen. is there something I am missing? I followed everything but I cant get this pie going. I really would like to revive some memories so any help is much appreciated. as soon as I figure this out I will begin a cabinet build. I know im new here but ive searched hi and low watched vids searched this and other sights and I cant get any answers. So I am down and out that its not as advertised but im all ears ready to take it in like a sponge. Step by step would be fantastic!

Thanks
Thezapper