How to scan mame 2003 plus roms?

I want to scan my mame 2003 plus roms into retroarch. [EDITED TO REMOVE PIRACY LINK] What should I do? Is there a simple guide?

Please don’t link to ROMs or sites to download ROMs. It’s one of the forum rules.

if you use a “splitted” or “non-merged” mame2003-set you should be able to use the RA-scanner on your Roms-Dir — just like any other core

I did. But none of the roms picked up by ra. Thats why I asked. It seems there is a step i missed.

just scanning the dir with your (zipped) roms should do it.