There will be people reading this who use the Hugh Wallis facility to read batches from the IGI, but i guess there are many who are unaware of the facility, for example within moments I found all the Cowells in the IGI who had been baptised at Braddan between 1626-1883. the site can be accessed at www.genealogy.rootsweb.com/~hughwallis/igiBatchNumbers.htm, it may be easier simply to google the name hugh wallis and transfer the result to your favourites, and the best is, its free.