can't access tcp/ip configure

i was doing work on isa server today which required me to
get into the tcp/ip properties but they were greyed out (
not accessable) on both nics. i then checked on my server
2000 domain controller and that nic tcp/ip properties were
also not accessable. i have a group policy restriction on
students from accessing tcp/ip settings but i was on as
domain admin and i don't believe this policy is the
problem. i tried disabling and enabling the nics and this
didn't work. any suggestions? thanks, santo