problems mounting smb share as different user

ok here is my setup I have Imac computer running 10.6.5 fully updated this computer is currently bound to AD 2008 server for user accounts and OD 10.6.5 server for computer management common setup that works great. The problem is when a user is logged into the computer using his or her AD account with a home dir smb share mounted an I am working on their computer logged in as them an need to mount my home dir smb share which is is on the same server it mounts but uses their credentials which does not have access to my home dir. I have try to eject their smb mount then mount as me but it uses kerberos authentication an mounts the share as them also I have try to use mount_smbfs from command line to do this but it also just mounts it as them. I have been looking on this site linuxquestion.org, google, apples forums but have not had any lucky finding anything close to what I am trying to do. I know on windows this is easy to do you just map a network drive and click
the connect using a different user name and then type in your username and password.