NT Workstation can not access shares

[Dave]

  This is an NT, not SAMBA, problem, but I don't know who else to ask.
Details at end.
  This client tries to access their home directory, and a dialog box pops
up titled -

  = Enter Network Password =========================================
 |                                                                  |
 |     Incorrect password or unknown username for:          <  OK  >|
 |        \\unixmachine\home                                <Cancel>|
 | Connect As: ________________________________             < Help >|
 | Password:   ________________________________                     |
  ------------------------------------------------------------------

  Last week, you could enter a valid username and password and get access,
this week I get :
 
  ==== \\unixmachine\home ========================================
 |                                                                |
 | \/       \\unixmachine\home is not accessible                  |
 | /\  The account is not authorized to login from this station.  |
 |                                                                |
  ----------------------------------------------------------------

  What's up with this???
  This account worked fine last week. The account is still usable from a
Win95 machine without any problems. Last week, this laptop died, and had to
have NT reloaded from scratch. Now this laptop can not access the SAMBA
shares that have share level security. All other TCP/IP stuff works fine,
and you can access the SAMBA shares that don't have any restrictions on them.
  Where on the workstation do I look? What is turned on that should be off?
Remember: THIS WORKED UNTIL THE LAPTOP DIED. I didn't change anything on
the SAMBA server.

  This is a laptop with NT 4.0 workstation. Last week, it was the base
install of NT, this week it is the same base install + Service Pack 3.
  Only one network protocol - TCP/IP
  5 Services - Computer Browser, NetBIOS Interface, RPC Configuration,
Server & Workstation.
  If you look under the Identification, the computer name is DAVE-NB and
the workgroup is WORKGROUP, there is noplace to enter a domain. Under the
<Change...> button, the only thing checked is "Member of: Workgroup :
WORKGROUP"
  There are NO NT servers anywhere on this network, only SAMBA machines
acking as file servers.
  The UNIX server hasn't changed. I am using SAMBA 1.9.16p11. If there is
security, it is share level security, not server level.
  Please send email and I will try to follow the digest.

dburwell at telecom.com