To change the information of these arrays I would refer to them like this. HOUSES[0,0] = 5 HOUSES[0,1] = 10 All this does is set the x and y of the first house to (5,10). Then later I could print a house back on screen by doing this. FOR I=0 to 4 LOCATE HOUSES[I,0] , HOUSES[I,1] PRINT "P" NEXT What this will do is go through every house and print them at their x and y position.