Miramax/Dimension had paid $4 million for the rights to distribute the movie in North America and some other territories, but then shelved it for more than two years. The company gave the film a US theatrical release at Christmas 2004 after heavy editing to secure a PG-13 rating.
(Around 23 minutes into the movie) Regina comes down the stairs and sees that her dad has found a secret room under the stairs. Her father comes out holding a picture apparently very interested. Regina asks her father, "What's that?" looking at the space under the stairs. We then see a still frame where just barely, you can see Regina's father still in the space looking at the picture even though he had just stepped out of that area.
What are the differences between the PG-13 and Unrated Version?
In the States a PG-13 Version of this horror movie was released in cinemas. This version was released on the US-DVD alongside the unrated version. Aside several, in the sum massive, plot cuts, which are certainly owed to a "movie theater-friendly" runtime of near 90 minutes, more than 40 pure censorship-edits have been made to secure the rating. In addition to that, this cut version was darkened, so that in scenes you cannot remove/change without causing problems in the narrative you cannot make out injuries and the like that easily. A detailed comparison between both versions with pictures can be found here.