How bad is it? It's a poor remake of a mediocre film with nothing new.
Should you see it? No.
Remaking a great horror film just makes one look bad in comparison; remaking a mediocre horror film just shows that a poor script can't be salvaged. Ghosts seeking revenge on the descendants of their killers simply aren't scary. John Carpenter's film was dull, but this film has nothing he had, including originality and a decent cast; Selma Blair is the only recognizable name in the cast.