Subdomains in novoya.com <<< How to do it ???

[eluser]Unknown[/eluser]
I created account named example in novoya.com, and so i have a site named example.novoya.com

Another created account example1, and novoya.com created a site named example1.novoya.com

So, could you so me how NOVOYA.com using mod_rewrite to do these works.

I want
http://domain.com/users/example/page/about-us/

become

http://example.domain.com/page/about-us/

So me the way how to do this ?