free portfolio templates

PVII CSS Templates or Page Packs (commercial product).

Rock solid. Tested to perform well in all browsers.
http://www.projectseven.com/products/index.htm

Dreamweaver CSS Templates for beginners
http://www.adobe.com/devnet/dreamweaver/articles/dreamweaver_custom_templates.html

New DW Starter Pages --
http://www.adobe.com/devnet/dreamweaver/articles/introducing_new_css_layouts.html

Nancy O.
Alt-Web Design & Publishing
Web | Graphics | Print | Media  Specialists
http://alt-web.com/
http://twitter.com/altweb

These designs are all free and open-source:

http://www.oswd.org/

They're not in a "Dreamweaver template" though, but this day and age I don't recommend people using Dreamweavers old-school templating system anyway.

If you're going to call yourself a web designer though I think most people are going to be under the impression that you created the design yourself and not have used a template. Maybe that's just me though.