There is a hack for a game called Trespasser that makes it run in windowed mode. The hack was done by modifying the DirectDraw settings. Since the Fallout 1/2 also uses DirectDraw, would this hack work for it also. The hack was done by setting the main DirectDraw SetCooperativeLevel with a parameter of DDSCL_NORMAL instead of FULLSCREEN | EXCLUSIVE and removing the main call to SetDisplayMode (CreateWindowEx). I cannot test this myself, cause I suck in hex editing. Could some hexedit wannabe test this?