BuddyPress.org

Hi guys, I start learning buddyPress its awesome and seems it will give big support to my dream site which will launch soon well guys can you guide me how to change dynamically member profile url to subdomain like url. example

Original profile url:
http://buddypress.com/members/demouser/

need to achieve this:
http://demouser.buddypress.com/

and for all members:
http://buddypress.com/members/ which is already happening its fine.

So i want do subdomain like user profile url but can’t figure out to do this.

Community i need support from you for this