stever - 3:10 pm on Dec 4, 2007 (gmt 0)

Certainly, if you are using modern layout methods, the underlying page structure is unlikely to be subject to copyright, since there are so many free css resources around these days.

Referring to this, I mean structures such as "two-column fixed, with left menu, header and footer". Look around in the css forum, I am sure there are references there to some of the more well-known resources.

It's once you get past that point that the potential problems arise. Javascript functions, Flash, images, etc., can all be subject to copyright, or part of a commercial offering and there, I would say, is where you need to start being aware of the issues you raise.