Hide a folder

Hi, i've read a couple of posts about the archived projects option. Because logged hours and other project information gets lost when archiving a project, we created a folder named archive in the projects folder. So now we have several client folders and one archive folder. We are moving the finished projects to that folder. The only thing we want now is the possibility to hide that folder in the 'projects by client' view. Is that possible? Please let me know. Kinde regards Werner Moison