CMS Pointing Domain to the CMS
 

I know this is a very basic question* still learning.


I have configured my domain http://domain.com to point to the CMS (http://domain.com/htdocs/forum) and this works just fine however* when configuring http://www.domain.com to point to the CMS (http://www.domain.com/htdocs/forum) all of the images are missing and most links are not working.
The CMS and forums are working very well* just need to point the domain without errors.

Any ideas?

Thank you