How do I add non project files to my project?

[adavis]

I do not have vault installed and I am trying to add sub files to my project. As of now my project has to find many of my files and I do not want to copy and past them into my project folder as this will mess with my parts numbering system.  I want only one part / assembly file per part.  I assume that you can do this with the project dialog box or some other system tool I just can not seem to figure it out.

[LFMarshall]

add libraries that point to where the parts you are wanting to "add" to your project are located

this will allow you to use those parts, but not modify them