Our TCP/IP protocol got corrupted somehow (perhaps from incompatible VPN software).We've tried a number of suggestions from technical bulletins, and nothing seems to work. The ping command gives: "unable to contact IP driver, error code 2". Ipconfig gives: "internal error, request not supported, unable to querry host name", and netdiag /test:winsock gives: "232 fatal can't find tcp/ip config in registry". We have tried deleting the winsock registry keys, running netsh winsock reset, reinstalling tcp/ip, overwriting the tcpip.sys file. Repeated the above with antivirus disabled. This is a new XP machine, and doesn't have any viruses. We're wondering if others may have seen this problem, is there a way to save us from having to reformat the drive?