First of all, when you import, the only options you should use are the size/position ones (the first 3 boxes). Uncheck 'make normals consistent'. Alternately, if you had that one unchecked, try checking it. Secondly, if you have uv mapper, open the obj in it. Resave the obj without normals and try it. You could also try using 'split vertices' on it. mac PS max's uv mapping sucks.