[Samba] is it possible to change a username?

[B McGraw]

One of my users just got married and changed her name.  Can I change her 
username,  just by editing the entry in the smbpasswd file?  or do I 
have to create a new user?  I know for her Unix passwd entry,  I can 
just change her name.  I'm using Samba 2.2.x.

Thanks for any help.
brian