use same controller for different urls

[eluser]Unknown[/eluser]
Hi
i have two different urls like
www.abc.com and www.abc.com/m/

i use m for mobile site .i want that when somebody enter the www.abc.com/m/ this url
than same controller will call that i have created for www.abc.com site .


if anybody know about this then tell me i shall be thankfull for u.

Thanks & Regards
Bhupinder