🚀 go-pugleaf

I've got what's probably a really simple question. I'm currently a Macromedia Fireworks user and this is my first look at imageready.

How do you get everything except user slices to export as table cells containg a spacer image?

I have a large white page with just a couple of images and a paragraph of text. I've drawn user slices tightly around those three elements and the rest of the page is blank white space covered automatically by auto slices.

when I save optimized as, it exports individual gif files for all auto slices instead of a single spacer.gif file which fills all of the empty table cells.

Any ideas? I've tried all of the slice settings in the output preferences. I basically want only what I've drawn a user slice around to export as an image, all of the rest of the page should be table cells with spacer images filling the cells.