Config problems with VHost

Using Apache2 on RHEL
I can configure VirtualHost correctly, and it does point to the correct folder for each site, however, only the front page and with no CSS, or admin capabilities. If you click on any link, the page is not found, as the links are not pointed correctly. Some point to ipaddress/site.
Disable VirtualHosting and the sites render correctly.
Seems similar to the problem you see when you move a site.
Anyone know how to resolve links after implementing VirtualHost?
Thanks,
Harry

ServerName 128.23.34.205:80
NameVirtualHost *:80

#<VirtualHost *:80>
#DocumentRoot /var/www/html/ddrc
#ServerName gidigest.musc.edu
#</VirtualHost>