The computer did not resync because no time data was available (w32tm)

Hi everyone,
               I a new too this, so please be patient with me.  I am trying to sync client time with the server time.  We have PC's on the factory floor called Clock in that require the engineer too clock in after at the begin and end of the task.  I am having trouble getting the clock in machines’ to sync with the DHCP server Windows’ Server 2003 SE SP1 which has the w32tm. 

I have tried a few ways to configure the time sever but I keep getting

C:\Documents and Settings\nrothwell>w32tm /resync /rediscover
Sending resync command to local computer...
The computer did not resync because no time data was available.

I do not want the time server to obtain the time from a external source but from the DHCP server its self.

I have used the following: http://support.microsoft.com/default.aspx/kb/929276 and it still has not resolved my problem.   I am not sure if I have changed the reg settings correctly. 
I have aslo read the following: www.mmmug.co.uk/files/216/download.aspxwhich is very good and useful.  I just can’t seem to get my head around this problem.

Please help

Kind Regards
Nigel