Thanx for help in advance. I have to join two subnets. One running NT domain and compters and another running 2000. I installed two NIC cards on one Win 2000 server and one network card is connected to network running 2000(lets name it A) and another running NT (lets name it B). TCP/IP configuration set are as follows for NIC card connected to A confi is IP: 192.168.1.57 Subnet Mask: 255.255.255.0 for NIC card connected to B confi is IP: 192.168.32.10 Subnet Mask: 255.255.255.0 Since the main purpose was to create two way trust between two domains, I installed domain controller on win 2000 server and this newly created pdc is replication pdc of network A.So now there are two pdcs on Network A(running win 2000) and either of available server does authentication. Second step I took was creating trust with NT domain controller in network B. First added NT domain under win2k "Domain that trust this domain". Second added winwk under NT "Trusting Domain". Third on win2k pdc under "Domain Trusted by this domain" added NT domain. Fourth on NT 4.0 pdc tried to add win2k domain as trusted domain. But here the problem started. NT domain says it cant find win2k domain. Though its pinging IP 192.168.32.10 it cant find domain. Next step I took was adding lmhost. On win2k I added lmhost as follows. 192.168.32.2 COMPUTERNAME #PRE #DOM:DOMAIN 192.168.32.2 DOMAIN "DOMAIN \0X1C #PRE On NT I added lmhost as follows. 192.168.32.10 COMPUTERNAME #PRE #DOM:DOMAIN 192.168.32.10 DOMAIN "DOMAIN \0x1C #PRE Than also it doesnt work. I tried thru cmd line nbstat -R but it says unrecognized command. Than I tried to ping IP 192.168.1.57(win2k iP) from NT pdc it didnt work. Than I tried to verify trust from win2k pdc and for that under "domain that trust this domain" I clicked verify on got following error. "Secure query channel (SC) for win2k to domain NT failed with error: There are currently no logon servers available to service the logon request." Can any one help me to find whats wrong?