Fireworks slicing!

Hey guys!

I am doing some slices in fireworks, and i have realised once i export it and load it in dreamweaver, i get a tiny gap between the table and the html page. All my margins are set to 0 in dreamweaver, am i missing anything in fireworks? Are there some settings there?

I cant set a background image coz i already have one.

Thanks for ur help!