Sab,
It is possible, but I would do it by creating a new sharepoint site and then importing the other items into it. One thing I feel pretty confident of is that almost no-one wants to do this. You can not simply rename an existing site as SharePoint is mainly stored in a database and you will upset it's view of the world.
I'm afraid your going to be on your own.
David
(c)David Overton 2006-23