IP Address Conflict

A Windows 95 machine that has been running fine on the network recently received the error message “The system has detected a conflict for IP address _____ w/ the sytem having hardware address _____. The interface has been disabled.”

We are running NT 4.0 on a PDC configured with DHCP, with approximately 120 Win95 clients. I released and renewed the IP address, although the message still appears. This has randomly happened to other computers, and when I reinstalled the NIC and configured the computers to the network, this seemed to resolve the issue. However, this is alot of work, and I am still unsure of why this conflict is occuring. Is there any way to determine which hardware address this computer is conflicting with?

-Dan