arcade games on retropie

Hi, I just set up my retropie and add some games ...

for most of what I add, It seen working great (like most of N64 emulations) but other seen not working (like those about the dreamcast ... wich I don't undersand yet how to find and add the path in the BIOS file .... )

but, I recently download the complet ROMs files about Capcom Play - CPS1 Set 1 and 2 to play good old arcade game ... on emuparadise

I unziped the package #1 (with all the many files inside it) and put it in my arcade file (on my retropie, in the ROMS folder, in the arcade file) ... but it look like not working ... I don't see anytime on my retropie after rebooting it ...

does I made some errors? or do i puted it in the wrong file?

txn