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There may be some cases where you still use the Windows Internet Naming Service or WINS on your network. Most likely, if you still have a windows system from before windows 2000, such as windows NT 4 systems. If this is the case you may want to be able to integrate these systems into a single naming service, which has to be a DNS to support windows 2000 and newer systems when using active directory. Microsoft windows DNS has a capability to perform a WINS lookup to resolve a name when the DNS lookup fails. It's most useful in a domain that contains your internal systems and uses dynamic DNS. This way systems that can't register using dynamic DNS can still register in WINS, and clients with only a DNS configuration and no WINS configuration can still resolve their names through DNS. This is done on a per zone basis and you will likely only use it in a single zone. The WINS lookup configuration will reference the WINS server you specify if the queried named cannot be resolved from records in the domain. When WINS integration is configured and you query workstation1.domain.tld for example, and workstation1 does not have a record in the domain.tld zone, the DNS server will try to retrieve record for work station 1 from the WIN server and if it exists, it will be returned to the client. To setup WINS integration, right click the zone to which to add WINS lookup and select properties, click the WINS tab. WINS lookup is disabled by default; select the use WINS forward lookup check box to enable it, type the IP address of each of your WINS servers in the box and click add. You can select existing addresses and move them up and down in the list using the up and down buttons, or remove them by clicking remove. The WINS servers are contacted in the orders they are listed. But - do not replicate this record - check box is used to instruct the windows DNS server not to transfer the WINS integration record in zone transfers. If you are using secondary DNS servers other than Microsoft windows DNS, zone transfers of zones with the WINS integration enabled will fail unless this box is checked. If you check this box and have a combination of windows and other secondary DNS servers, you can manually enable WINS lookup on the secondary servers through the procedures just described. If you are configuring WINS resolution on a secondary zone, the - do not replicate this record - check box will be replaced with a use local WINS resource record check box. This is used to override the WINS record transferred form the primary zone if one exists. For the final configuration options for WINS integration, click the advanced button. The cache time out value is used to determine how long a WINS lookup is cached by the DNS server. Higher values have the potential for cached WINS entries to become stale while lower values cause more traffic to be directed to your WINS server. The default value is fine in most cases. The lookup time out value defines how long the DNS server will wait for response from the WINS server, before marking the lookup as failed and returning the failed response to the client. This value can be changed if you find WINS lookups are failing but you know your WINS server is responding. The time out value could be too low if you WINS server is very slow or on a remote connection with a slow link. Click ok to close the advanced dialog and click ok to close the domain properties dialog. You will now see a WINS lookup record added to your zone. WINS lookup should now work through your DNS server.