To gedt to fortress Highbury, get the train to paddington, the circle line to Kings Cross, and the Piccadilly Line from there to...ARSENAL! You'll come outon the corner of the North Bank and the East Stand, sobasically in the opposite corner from where you want to be, but to get the best feel for the stadium/atmosphere (carling cup...) etc., walk left out the station along the North Bank, past all the people in there gardens selling fake shirts, past the programme seller on the left (old man, grey hair, little red stool with wheels on to sell rogrammes, been there 30 years, first one you come to) then go right at the fish and chip shop (£1.30 - cheeseburger and chips)and walk along the hallowed west stand, past the entrance to the marble halls and the entrance to the clock end is at the end of the west stand, top of the road.