ROMcentre and clrMAMEpro are the daddys of ROM verifiers, either of those will do the lackey work for ya.
ROMcentre is my personal choice, top interface and it delivers the goods with hardley any effort once youve got it set up.
It'll be worth checking everything over if its the first time youve verified your MAME stuff with a proper tool, my sets were in a right fucking mess the first time I used RC.
Mosey on over to
http://www.romcenter.com for the program itself and
http://www.logiqx.com for any arcade .dat files you might want.
[ 26 March 2002: Message edited by: RabidYak ]