OK, after a recommendation of Dark Souls Prepare to Die Edition I went and bought a copy and installed it under Windows 7 in Bootcamp. I killed the Asylum Demon and got picked up by the giant bird and dropped at the Firelink Shrine and this is where the problems begin. The playing area where your character runs around is totaly out of focus but the life meter top right and 4 boxes that show your equipped items items etc are all OK. If I open up any of the menus that overlay the playing area they are all OK also and when any of these are pulled up I can see that the screen behind has pulled back into focus, close menu back to totaly unplayable playing screen. Tried just re booting to no avail, anybody had this happen or know what could be the cause ?