i'll start with a list of hardware and how things are setup: -3 computers running XP Pro and 1 running linux (not a problem [i don't think]) -all the computers running on the internet though a hub, each with their own ip assigned by dhcp problems: -only 2 of the 3 xp machines ever networked locally. -replaced hub with switch; none would network -restored hub to current network and now none will network i've changed NIC's, hub/switch, cables; been through network setup wizard many, many times. it just refuses to work and there's absolutely no apparent hardware problem other than the switch (dhcp problem) but that's out of the game now. if someone has insight to this local network problem, i'd greatly appreciate the help. xp's networking so far has been a nightmare.