When you access the Sharing tab of the Printer Properties dialog box in an Active Directory domain, you receive:
The Directory operation is still in progress.
The DNS server address in the TCP/IP settings of the computer is not set correctly or the DNS server is not set up correctly.
Adjust the DNS setting so that it points to a DNS server that contains a copy of the DNS zone for the Active Directory domain.
See the following Microsoft Knowledge Base articles:
Q237675 Setting Up the Domain Name System for Active Directory
Q241505 SRV Records Missing After Implementing Active Directory and DNS
Q241515 How to Verify the Creation of SRV Records for a Domain Controller
Q178169 DNS Records Registered by Windows 2000 Domain Controllers
Q254680 DNS Namespace Planning