I believe an up to date Irish DVD does exsist - sure I have seen the details on the forum somewhere, up north all but the most minor roads seem to show up on the map - having said that cross the border into Louth and the new road building schemes have outwitted the system - not unreasonably as you would have to go some to keep up with the by-passes that are springing up all over the East of the country (*** Bless the EU)
Eddie