ah nvm, I see how absolute positioning works, so I guess you don't actually need to nest divs. I think I'll try that.
EDIT: okay, so I have a new template done in CSS with no tables and now I'm trying to add a site menu at the top, with buttons inside each of the arches that show the name of their link destination above the CD drive thing on the left on mouseover. I looked it up and it's possible, but like doing anything in CSS, it's going to take a lot of time.