I am have a small Ubuntu based file server running in a small business. I set up Samba and I can log in to the server and RW files to the directory on the server from the windows machines. There is, however, another folder within the shared directory which has privileged access permissions. There are 2xWin98 and 8xWinXP machines. Most of the computers are set up to log in as a "normal" user (aka they can RW everything but that one folder). Is there an easy way to be able to switch users so that the privileged user can access that folder from any computer?