Hi all ,

I am currently designing a site in xhtml/css within Dreameaver and was wondering if in my scenario i SHOULD use Absolute Positioned DIVS ......
The site was designed in Photoshop and sliced into 3 parts (header/body/footer), these 3 slices i want to line up perfectly within dweaver , all inside a container div.
I would assume on this occasion i would use Absolute ??? but not entirely sure!!
Would i use relative Divs and floats...if so how the hell do you do that !!! (lol)

Also .. slightly off subject, should i use em or px for my font sizes ... i tried ems , but even at 1em size the text was rather large on the screen ?!?!

many thanks !!!