Laura --
If your Project Server security settings are set up so that project managers
can only open their own projects read-write, but see everyone else's project
as Read/Only, then you can simply change the Owner of the closed project to
one of your Project Server administrators. Other than that, I don't believe
there is a simple way to do what you wish.
--
Dale A. Howard [MVP]
Enterprise Project Trainer/Consultant
Denver, Colorado
http://www.msprojectexperts.com
"We wrote the book on Project Server"