When you say that the 98 machines are unable to access the network,,, do you mean they cannot "logon",,, or you cannot browse the network and "see" the XP machines,, or they have lost their mapped drives?? As I understand it,,, and I have been know to be wrong at least once a year,, hee hee. The ability to browse and see other machine is based on the machines having netbui enabled. When everyone started going to TCP/IP,, and either assigning the address, or having them assigned thru DHCP,, sometimes they stop enabling the netbui protocal,, or enabling name resolution via TCP/IP. so the answer to your question depends on,, if the 98 machines cannot logon,, or browse, or both.. There are so many different variables,,, it it difficult to give a concrete answer.