WINS not seeing client reg. or resloving

I have 3 NT Servers SPK4 running in a ethernet switch inviroment. The PDC on one side of the switch and the remaing 2 are on the other side. I’m using DCHP & WINs Hnode.
the network setup is as follows: the PDC is on vlan 1 the 2 BDC are on Vlan 104 & 105
also the PDC is multihomed. The Wins serve on vlan 104 & 105 can see the PDC and the PDC can see them. but the BDC’s do not see the client workstation on there segment thus they are not resloving netbios info. the workstations can ping the PDC & BDC’s but fail to see the accross vlans. Network naborhood only shows what is on that stations vlan and can not find the othen vlan or the PDC. Any help would be greatly appercated.!!