samba - Mar 2005 - using w32tm (WinXP) w/samba3 as DC: can't get DC List

I have a winXP client connecting to Samba 3.09 running as a PDC.
The client machine is joined to the domain and the login box
shows the domain name as the entity I'm logging into.

I don't know if I don't have something set "right" or not, but
I
noticed my local clock had drifted about 50 seconds off of the
PDC.  I have the windows time daemon running and I've seen it
successfully set the time by specifying the DC-hostname directly,
but the help text says internet synchronization only occurs _weekly_
(weakly?).

It says if you are part of a domain, your clock is automatically
synchronized with the PDC.  But my computer doesn't appear to
be doing this.  When I ask w32tm to compare it's local clock
to the "Domain's" network time:
 > w32tm /monitor /domain:Bliss      # I get:

GetDcList failed with error code:  0x80070774.
Exiting with error 0x80070774

---
In the system log, I see the following message:

Time Provider NtpClient:  This machine is configured to use the domain 
hierarchy to  determine its time source, but the computer is joined to 
a  Windows NT 4.0 domain. Windows NT 4.0 domain controllers do not have  
a time service and do not support domain hierarchy as a time source.   
NtpClient will attempt to use an alternate configured external time  
source if available.  If an external time source is not configured  or 
used for this computer, you may choose to disable the NtpClient.

----------

    I'm slightly confused...

What is the "time server = yes" allow or permit as a time service?

I thought Windows NT 5 domains were supported in Samba now?  Was
I just having a fantasy or is there some switch/toggle I need in
my configuration file...?

Thanks!
Linda