by my calculations we will be up to 29th in world and 18th in europe when next lot of rankings come out (up ten places)
this has more to do with some poor results (defeats to serbia and wales) dropping in significance than any massive boost from northern ireland win.
assuming they go to 9 groups for world cup qualifiers again we would therefore be in pot 2 as it stands. a win vs ireland in june almost certainly keeps us there, a draw would be unlikely but possible (circa 25% chance), a loss would almost certainly have us in pot 3. no chance as far as i can see of dropping into pot 4 now.
happy days!