Thanks to berwanger for this post. I am now able to change the URL for the many domains to the one domain that I wish. The post outlines how to have "domainA.com" or "domainB.com" rewrite to "www.domainC.com" - which is exactly what I want.

However, when someone enters "domainA.com" for my Drupal site, the URL gets rewritten to "http://www.domainC.com/?q=" How do I get rid of the "?q=" ?

Here is the contents of my .htaccess:

RewriteEngine on
RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]

RewriteCond %{HTTP_HOST} ^(ww+\.)?domainA\.com 
RewriteRule ^(.*) http://www.domainC.com/ [R=301,L]

RewriteCond %{HTTP_HOST} ^(ww+\.)?domainB\.com 
RewriteRule ^(.*) http://www.domainC.com/ [R=301,L]

I tried adding the QSA switch and changing the order of the rules, but that did not help.

Any help would be appreciated. Thanks.