Works well!

http://www.graphics.com/modules.php?...ticle&sid=5132

Qouted from the webpage: "The program was created by [EPIC Games] Senior Environment Artist Warren Marshall, who was looking for a way to ease the creation of perspective grids in Photoshop. It enables users to place from one to nine vanishing points, with one-, two- and three-point perspective grids possible, along with the capability to handle unusual angles in a scene. Once a grid has been set up in Carapace, users simply copy and paste it into Photoshop [or XARA], where it's used as a guide."

Enjoy!