Photoshop book design - constant width border

I'm designing an asukabook, and I want to leave the same amount of empty space above, below, and to one side of an image on a page, accurately and consistently. Does anyone know how to do that?

Guides placed with rulers?

Or take the image, then increase canvas size with white, and that will help line up consistently since PS will snapp based on image edges?

Hmmm.... are guides kinda blue/green lines on your image? Maybe that's what the Asukabook templates have! I'll go google how to use them, thanks Scottes!

What I really want is the ability to design an AsukaBook in PhotoJunction... now there's a decent layout program.

Yep, those are guides. You can also take a look at Grid, too. That may be a little rougher for placement, but easier/faster to use.

What I would like is to be able to say "make sure that the gap between this image/edge and between this other image/edge is the same as that one over there". You can do some things with the align and distribute tools (which I just found today), but not quite enough.

The grid isn't really useful, i'm finding, what's more useful is things snapping into place. That behaves differently based on your level of magnification, which is interesting to work with.

One trick that I've used in many programs is to create another temporary object the size of the border width, and then use that to aid the aligning process, then delete it. So create some red 1-inch square images. With Snap on, or Align, snap a red square next to one image, then your second image snaps to the red square, then you delete the red square. Very fast 1-inch spacing.

Clever.