Terinea can use open source, in house design or third party templates for your web site. Below are a number of links that should help you come up with an idea or direction for your web site. 

The two sites below you can use any of the templates listed for free. The only exception is your template is also has to be open source.

http://www.oswd.org/designs/browse/ VERY GOOD 

http://www.openwebdesign.org/ 

These sites don't contain open source templates or can you buy them, but you can get some inspiration!

http://www.cssremix.com/ VERY GOOD 

http://www.cssdrive.com/

http://www.cssimport.com/ 

http://www.cssbeauty.com/gallery/ 

http://cssvault.com/  

The templates listed on the sites below can all be purchased. Remember Terinea can often design templates alot cheaper than some designs listed here.

http://www.templatemonster.com/ 

http://freesitetemplates.com/ 

http://www.dreamtemplate.com/ 

http://www.templateworld.com/all_web_templates_1.html