i have the latest virtualbox 1.6 installed in leopard and running hardy heron as a guest. i have already figured out how to mount a shared folder(which is my 'Downloads" folder in leopard) in my home directory in hardy. however when i try to access or write to it, it says that i do not have permission and the folder appears empty. i can get access to the contents of the folder if i do 'sudo nautilus' in terminal. how do i get permission?