Setting a dll in the path variable of IntelliJIDEA Follow

I tried to set a dll in the path variables option of IDEA. U know the dialog for doing this contains two fields one is name another is value. The name is typed but the value is chosen by pressing the ".." button next to it. Pressing the button results in a directory tree from which I am supposed to select any files. But only jars are shown in the tree. So I cannot choose the DLL I need. So what is the workaround here.