TCP/IP Error in Windows XP

I am trying to install a networked copier/printer machine that is attached to our network. I keep getting the Error loading the TCP Mib library. What exactly is this error and how can I fix it? I’ve tried disabling the network card, re-installing drivers, etc. It comes up when I click on add a printer and then I try to create a new HP Standard TCP/IP port. When I click next I get the error described above. This is the only machine this has happened to, any explinations? It’s able to see our network drives and connect to the internet. Please help!