Go see the original.
The new version of the movie has the following "improvements":
-Terrible acting
-A shot of the world trade center being hit by a plane
-Typical holywood "stuff jumping out at you for no reason" scares
-TERRIBLE ACTING, holy crap, that kid who plays damien needs to be flogged. And Julia Styles cannot act worth a fuck.
With all this in mind, go see the original. They tried an exact reproduction of a lot of scenes and much of the dialouge is taken verbatim. Totally not worth the price of admission (and I got in free, so that's saying something).