Do you have to pay a fee to see if they have the record you are looking for.In my reasearch I'm looking for the Bap of Robert WOOD/S b Dernaweel Killashandra 1837/1838.It fits into the timeframe they have for Bap for Killashandra.
I believe you need to commission research at the RCB. I used them once, to ask for Parish histories with information on a relative who was in the church. I did pay for that research.
I have heard that they may be digitizing records.