> I would like to comment out some URLs in the URL list of a
> project. For example, if I have a project called WWII and 
I
> have one URL, I get the website for that URL. Then later, 
if
> I add some URLs, I only want to get the new URLs, not the
> original one (which is 70+mb). So I want to comment out 
the
> original URL and get the files for the new URLs. 

You have two options:
- make serapare projects (which is generally the best 
solution)
- add URLs to an existing project

You can not "temporarily" disable an URL in a project, 
however, because httrack will always have to rebuild the 
local structure to "know" where the links are.