I am working on a small network that has 6 workstations running Windows XP.  They are attached to a domain controller running Windows 2000 Professional Server.  I recently added a Dell Vostro_2000 running Windows Vista Basic Home edition.  The Vista system can see and access all the workstations.  It can see the server, but it can not access it even after providing the proper userid and password.  Has anybody experienced this?