We don't have a theme creator however I think what you are after is who to go about changing the template that the site is currently wrapped in.
If so you'll need to work with the site-wide template of the site. If you plan on creating a custom template you can do so within DW CS6 or within the admin by creating a new template from scratch or uploading an existing custom template.
Here are some resources to help you get going with this...
Hope this helps!
Would it be possible to do a kind of staging? Something like, create a new site from an existing site with existing data and all its history, then, do modification, reskin etc.. and finally change the DNS to point to the new site? Then delete the old one?
Does that make sens?
thanks for your response sidney, I'm going through with it will hope it will help..
thanks once again
As M. Adey has asked here, if you have an existing BC site, what is your reccomendations for a staging environment to build a new site? I understand hwo to develop a BC site, but now how to create a staging environment.