Slicing Images/Fill tool

Ok recently in photoshop i have been designing web layouts and theres one thing i need help on. I was wondering if anyone could post a good slicing tutorial that clearly explains how you can the html contents to your site, for expample once you've made a content box, how then do i slice it so that i can add text inside the box and the box can also get bigger the more text that is added. Any help with this will be appreciated . Also one little problem i seem to be having is that when i use the fill tool and fill inside a cut out (marching ants) it always overlaps the edges of the lines and looks like its been blurred,anyone know why this happens?

Thanks in advance for any help

If I understand you correctly, the quickest way to have a content box in this situation would probably be to use an inline frame