lol i know all there is about ireland maps m8, i work in maplins
first you wont get a "good map" untill the end of 2006,
version 7 of garmins GPS mapping system is the best so far, but only does main citys and roads.
navtec have "in theory" got the whole of ireland mapped as of the start of this year but other retailers are currently customizing them for there own needs before selling them on the public.
sorry to be te one to give you the bad news...