Originally Posted by QTFLYER

*To visit a Star Alliance lounge, other than Continental's Presidents Clubs and United's Red Carpet Clubs, you’ll need to present a same-day boarding pass for travel on any Star Alliance flight. You must show your US Airways Club Membership Card to enter United and Continental lounges.


This was taken from US Air website. It does not single out any lounge, just says ANY star alliance lounge with boarding pass.

From that I would imagine any lounge could be used, regional or otherwise.