Subdomain creation using .htaccess & mod_rewrite

This is a very simple project for someone who knows .htaccess, mod_rewrite, and apache extensively.

I have a PHP file when queried is of the sort:

http://www.usawebonline.com/search.php?site=cnn.com

I need it re-written to be

http://cnn.com/usawebonline.com

IF NOT possible to use their domain as the subdomain, acceptable alternatives are:

http://cnn-com/usawebonline.com (subbing "." for "-")
http://cnncom/usawebonline.com (removing ".")


I've tried many possibilities to achieve this but these is a detail wrong in every attempt, otherwise I would post what I have tried.

Please help!

why don't you just create it in cpanel?

Do you own any of the above mentioned CNN.com or USAWEBONLINE.com ??

Or, If they are examples, Do you have the access to both of the real domains?

In that case, it can be done!

~ExP~