Need to "copy" another website layout design and function, but make it unique to my websites, with better graphic design, and a friendly admin/user panel to update and change content. Zen-cart panel is welcome! The server is Linux OS.

I would like this to be done ASAP. We need to build many websites. It's a long work. But we need every website to be done in two weeks. Again, I would like this to be structured with a simple admin/post/content system such as Zen-cart etc. Thank you!