How do I edit (as a Admin) a Facebook Group URL name?

[Phill Strange]

How do I (as a Group admin) change the URL name of a Group on Facebook?
How do I change (as a Group Admin) the URL name (in the website box) of a Facebook Group from-
*EXAMPLE: http://www.facebook.com/groups/854638348949490 to
http://www.facebook.com/groups/facebookgroup ??

[abraXus]

go to the group page, click the little gear icon in the top right, then click edit group

there's a box on that page for group name