Win2k DHCP W/ WINNT Please help URGENT

Scenario:

I have DHCP on a Windows 2000 Server. I have Windows 98 and Windows 2000/XP machines working fine from this DHCP server. My problem is with any Windows NT machines the DHCP server will not assign them(the NT Machines) a gateway. Thus, none of my NT machines are working with DHCP.

Additional INFO:
MY PDC is Windows NT
I am not on ACTIVE DIRECTORY
All machines work except Windows NT Machines