i have two computers on network that have one IP address and two names. any information on why this happens, or how to fix it would be greatly appreciated. thank you.

Same GUID maybe?Have you tried releasing and renewing their IP's?From command promptipconfig /releaseipconfig /new

i cannot relase and renew the IPs, because they are static. on a corporate network. the problem is that when i started here they wanted to reformat and reinstall the os on these computers, and to rename them. the problem is that the orginal name of the computer is still associated with the IP, but the new name is not. how can i remove any reference to the original name and redirect the domain/AD to the new name.