Ok BDaercy, excuse me if i was so "aggressive" with you, it was not the goal of my comment, it was only on a "joke" style.
Well, I am using the same roms than mame so I think I can add a crc checker like it.
I think the best choice will be a dat file whith the zip files content (name / size / crc, etc ...).
I put it on my "to do" list for the next release