Imageready Slices to HTML

I am creating an interactive trainer that operates like a website. I created slices and rollovers for different section within the trainer and all works flawlessly in Imageready, but when I preview there are gaps between the slices and some of the page edges are jagged where the slices seem to have moved or slipped?
What do I need to do to correct this?

Thanks - Tom

It sounds to me like your "options" settings are not adjusted correctly in the "File" > "output settings" > "Slices" section. Have a look and check that the "spacer cells" setting is set to "auto" or "always" and not "never".