Originally Posted by
cptlflyer
Don't think so unless the DTW LH lounge is special somehow.
Members may also access select Star Alliance member-operated lounges when departing on a Star Alliance member airline. ... For Star Alliance lounge entry, you must present your membership card and a Star Alliance member airline international boarding pass for a same-day departure.
From the 'PC members' section of
http://www.continental.com/web/en-US...ge/access.aspx (although these two quotes from the same section seem to disagree with each other

- but both are clear that a *A BP is required for PC members at *A lounges other than US, UA, and CO lounges).