I'm setting up a small home, peer-to-peer network for some friends. The new machine has XP Home for the OS, and the old system has Windows 2K. I've got both systems set for the same workgroup names, sharing on, and connected through an AOpen router. The lights indicate communication (including blinking while searching for another computer), but neither computer sees the other. All firewalls are off, both systems are set to autodetect IP Addresses, the DHCP is enabled, everything else looks like it should work.
But it doesn't, even after several reboots.
I've set up WinXP Pro/98 systems, XP Home/98se systems, and WinXP Pro/Windows 2000 systems before, all without major difficulty, but never Home and W2K.