Hi Simon, Unfortunately, it's really difficult to do this. Once you install an application, and feed it the required library, other applications that require it don't complain anymore if it's there. You would need to clear the library directory to test every application - unless there's a better way. I thought there was an application that would tell you which libraries an application requires, but can't remember it. -- --------------------- Karl vom Dorff B.Sc (Hons) Biology, (German minor) http://www.numbdesign.com