http://www.dreamtemplate.com/ - Dreamtemplate
Dreamweaver has member access to all of the website designs, and there are aproximatley 3000.

If that is not enough, then here are links to some others template websites which are mostly free as well.

http://www.freewebsitetemplates.com/ - Free Website templates
http://www.websitetemplates.org/ - Free Website Templates
http://www.oswd.org/ - Open Source Web Design
http://www.steves-templates.com/ - Steves Templates
http://www.metamorphozis.com/ - Metamorphosis (some free, some pay)

The following require you to buy a template. If you cannot find anything above, or like these more, then it may cost US$50 - US$100. Let us now if you require one)
http://www.templates.com/ - Templates.Com (extra cost involved)
http://www.smartertemplates.com/ - Smarter Templates (extra cost involved)