[oXygen-user] set an XML Schema for a directory?

Hi, I haven't used project mode much, but I just created a new project and imported a directory structure into it. One of the folders contains content files that are supposed to adhere to one XML Schema. I see the 'validate selection with...' which allows me to validate the entire directory -- which is great. However, when I bring up an invalid file I would like to have the editor know which schema to use (the one I validated the dir against) so the editor will give the element/attribute options without having to assign the schema each time. Make sense? Is this possible? best, -Rob